Compose-Files/Backups/Miker/Bookstack/cheat-sheets.md

tags

tags
Documentation Bookstack Notes

Cheat Sheets

Docker

Running Containers

COMMAND	DESCRIPTION
`docker run `	Start a new container from an image
`docker run -it `	Start a new container in interactive mode
`docker run --rm `	Start a new container and remove it when it exits
`docker create `	Create a new container
`docker start `	Start a container
`docker stop `	Graceful stop a container
`docker kill `	Kill (SIGKILL) a container
`docker restart `	Graceful stop and restart a container
`docker pause `	Suspend a container
`docker unpause `	Resume a container
`docker rm `	Destroy a container

Container Bulk Management

COMMAND	DESCRIPTION
`docker stop $(docker ps -q)`	To stop all the running containers
`docker stop $(docker ps -a -q)`	To stop all the stopped and running containers
`docker kill $(docker ps -q)`	To kill all the running containers
`docker kill $(docker ps -a -q)`	To kill all the stopped and running containers
`docker restart $(docker ps -q)`	To restart all running containers
`docker restart $(docker ps -a -q)`	To restart all the stopped and running containers
`docker rm $(docker ps -q)`	To destroy all running containers
`docker rm $(docker ps -a -q)`	To destroy all the stopped and running containers
`docker pause $(docker ps -q)`	To pause all running containers
`docker pause $(docker ps -a -q)`	To pause all the stopped and running containers
`docker start $(docker ps -q)`	To start all running containers
`docker start $(docker ps -a -q)`	To start all the stopped and running containers
`docker rm -vf $(docker ps -a -q)`	To delete all containers including its volumes use
`docker rmi -f $(docker images -a -q)`	To delete all the images
`docker system prune`	To delete all dangling and unused images, containers, cache and volumes
`docker system prune -a`	To delete all used and unused images
`docker system prune --volumes`	To delete all docker volumes

Inspect Containers

COMMAND	DESCRIPTION
`docker ps`	List running containers
`docker ps --all`	List all containers, including stopped
`docker logs `	Show a container output
`docker logs -f `	Follow a container output
`docker top `	List the processes running in a container
`docker diff`	Show the differences with the image (modified files)
`docker inspect`	Show information of a container (json formatted)

Executing Commands

COMMAND	DESCRIPTION
`docker attach `	Attach to a container
`docker cp : `	Copy files from the container
`docker cp :`	Copy files into the container
`docker export `	Export the content of the container (tar archive)
`docker exec `	Run a command inside a container
`docker exec -it /bin/bash`	Open an interactive shell inside a container (there is no bash in some images, use /bin/sh)
`docker wait `	Wait until the container terminates and return the exit code

Images

COMMAND	DESCRIPTION
`docker image ls`	List all local images
`docker history `	Show the image history
`docker inspect `	Show information (json formatted)
`docker tag `	Tag an image
`docker commit `	Create an image (from a container)
`docker import `	Create an image (from a tarball)
`docker rmi `	Delete images
`docker pull /:`	Pull an image from a registry
`docker push /:`	Push and image to a registry
`docker search `	Search an image on the official registry
`docker login`	Login to a registry
`docker logout`	Logout from a registry
`docker save /:`	Export an image/repo as a tarball
`docker load`	Load images from a tarball

Volumes

COMMAND	DESCRIPTION
`docker volume ls`	List all vol1umes
`docker volume create `	Create a volume
`docker volume inspect `	Show information (json formatted)
`docker volume rm `	Destroy a volume
`docker volume ls --filter="dangling=true"`	List all dangling volumes (not referenced by any container)
`docker volume prune`	Delete all volumes (not referenced by any container)
`docker run --rm --volumes-from -v $(pwd):/backup busybox tar cvfz /backup/backup.tar.gz `	Backup a container
`docker run --rm --volumes-from -v $(pwd):/backup busybox sh -c "cd && tar xvfz /backup/backup.tar.gz --strip 1"`	Restore a container from backup

256 Color Codes

---

Colors 0-15 are Xterm system colors.

Xterm Number	Xterm Name	HEX	RGB	HSL
0	Black (SYSTEM)	`#000000`	rgb(0,0,0)	hsl(0,0%,0%)
1	Maroon (SYSTEM)	`#800000`	rgb(128,0,0)	hsl(0,100%,25%)
2	Green (SYSTEM)	`#008000`	rgb(0,128,0)	hsl(120,100%,25%)
3	Olive (SYSTEM)	`#808000`	rgb(128,128,0)	hsl(60,100%,25%)
4	Navy (SYSTEM)	`#000080`	rgb(0,0,128)	hsl(240,100%,25%)
5	Purple (SYSTEM)	`#800080`	rgb(128,0,128)	hsl(300,100%,25%)
6	Teal (SYSTEM)	`#008080`	rgb(0,128,128)	hsl(180,100%,25%)
7	Silver (SYSTEM)	`#c0c0c0`	rgb(192,192,192)	hsl(0,0%,75%)
8	Grey (SYSTEM)	`#808080`	rgb(128,128,128)	hsl(0,0%,50%)
9	Red (SYSTEM)	`#ff0000`	rgb(255,0,0)	hsl(0,100%,50%)
10	Lime (SYSTEM)	`#00ff00`	rgb(0,255,0)	hsl(120,100%,50%)
11	Yellow (SYSTEM)	`#ffff00`	rgb(255,255,0)	hsl(60,100%,50%)
12	Blue (SYSTEM)	`#0000ff`	rgb(0,0,255)	hsl(240,100%,50%)
13	Fuchsia (SYSTEM)	`#ff00ff`	rgb(255,0,255)	hsl(300,100%,50%)
14	Aqua (SYSTEM)	`#00ffff`	rgb(0,255,255)	hsl(180,100%,50%)
15	White (SYSTEM)	`#ffffff`	rgb(255,255,255)	hsl(0,0%,100%)
16	Grey0	`#000000`	rgb(0,0,0)	hsl(0,0%,0%)
17	NavyBlue	`#00005f`	rgb(0,0,95)	hsl(240,100%,18%)
18	DarkBlue	`#000087`	rgb(0,0,135)	hsl(240,100%,26%)
19	Blue3	`#0000af`	rgb(0,0,175)	hsl(240,100%,34%)
20	Blue3	`#0000d7`	rgb(0,0,215)	hsl(240,100%,42%)
21	Blue1	`#0000ff`	rgb(0,0,255)	hsl(240,100%,50%)
22	DarkGreen	`#005f00`	rgb(0,95,0)	hsl(120,100%,18%)
23	DeepSkyBlue4	`#005f5f`	rgb(0,95,95)	hsl(180,100%,18%)
24	DeepSkyBlue4	`#005f87`	rgb(0,95,135)	hsl(97,100%,26%)
25	DeepSkyBlue4	`#005faf`	rgb(0,95,175)	hsl(07,100%,34%)
26	DodgerBlue3	`#005fd7`	rgb(0,95,215)	hsl(13,100%,42%)
27	DodgerBlue2	`#005fff`	rgb(0,95,255)	hsl(17,100%,50%)
28	Green4	`#008700`	rgb(0,135,0)	hsl(120,100%,26%)
29	SpringGreen4	`#00875f`	rgb(0,135,95)	hsl(62,100%,26%)
30	Turquoise4	`#008787`	rgb(0,135,135)	hsl(180,100%,26%)
31	DeepSkyBlue3	`#0087af`	rgb(0,135,175)	hsl(93,100%,34%)
32	DeepSkyBlue3	`#0087d7`	rgb(0,135,215)	hsl(02,100%,42%)
33	DodgerBlue1	`#0087ff`	rgb(0,135,255)	hsl(08,100%,50%)
34	Green3	`#00af00`	rgb(0,175,0)	hsl(120,100%,34%)
35	SpringGreen3	`#00af5f`	rgb(0,175,95)	hsl(52,100%,34%)
36	DarkCyan	`#00af87`	rgb(0,175,135)	hsl(66,100%,34%)
37	LightSeaGreen	`#00afaf`	rgb(0,175,175)	hsl(180,100%,34%)
38	DeepSkyBlue2	`#00afd7`	rgb(0,175,215)	hsl(91,100%,42%)
39	DeepSkyBlue1	`#00afff`	rgb(0,175,255)	hsl(98,100%,50%)
40	Green3	`#00d700`	rgb(0,215,0)	hsl(120,100%,42%)
41	SpringGreen3	`#00d75f`	rgb(0,215,95)	hsl(46,100%,42%)
42	SpringGreen2	`#00d787`	rgb(0,215,135)	hsl(57,100%,42%)
43	Cyan3	`#00d7af`	rgb(0,215,175)	hsl(68,100%,42%)
44	DarkTurquoise	`#00d7d7`	rgb(0,215,215)	hsl(180,100%,42%)
45	Turquoise2	`#00d7ff`	rgb(0,215,255)	hsl(89,100%,50%)
46	Green1	`#00ff00`	rgb(0,255,0)	hsl(120,100%,50%)
47	SpringGreen2	`#00ff5f`	rgb(0,255,95)	hsl(42,100%,50%)
48	SpringGreen1	`#00ff87`	rgb(0,255,135)	hsl(51,100%,50%)
49	MediumSpringGreen	`#00ffaf`	rgb(0,255,175)	hsl(61,100%,50%)
50	Cyan2	`#00ffd7`	rgb(0,255,215)	hsl(70,100%,50%)
51	Cyan1	`#00ffff`	rgb(0,255,255)	hsl(180,100%,50%)
52	DarkRed	`#5f0000`	rgb(95,0,0)	hsl(0,100%,18%)
53	DeepPink4	`#5f005f`	rgb(95,0,95)	hsl(300,100%,18%)
54	Purple4	`#5f0087`	rgb(95,0,135)	hsl(82,100%,26%)
55	Purple4	`#5f00af`	rgb(95,0,175)	hsl(72,100%,34%)
56	Purple3	`#5f00d7`	rgb(95,0,215)	hsl(66,100%,42%)
57	BlueViolet	`#5f00ff`	rgb(95,0,255)	hsl(62,100%,50%)
58	Orange4	`#5f5f00`	rgb(95,95,0)	hsl(60,100%,18%)
59	Grey37	`#5f5f5f`	rgb(95,95,95)	hsl(0,0%,37%)
60	MediumPurple4	`#5f5f87`	rgb(95,95,135)	hsl(240,17%,45%)
61	SlateBlue3	`#5f5faf`	rgb(95,95,175)	hsl(240,33%,52%)
62	SlateBlue3	`#5f5fd7`	rgb(95,95,215)	hsl(240,60%,60%)
63	RoyalBlue1	`#5f5fff`	rgb(95,95,255)	hsl(240,100%,68%)
64	Chartreuse4	`#5f8700`	rgb(95,135,0)	hsl(7,100%,26%)
65	DarkSeaGreen4	`#5f875f`	rgb(95,135,95)	hsl(120,17%,45%)
66	PaleTurquoise4	`#5f8787`	rgb(95,135,135)	hsl(180,17%,45%)
67	SteelBlue	`#5f87af`	rgb(95,135,175)	hsl(210,33%,52%)
68	SteelBlue3	`#5f87d7`	rgb(95,135,215)	hsl(220,60%,60%)
69	CornflowerBlue	`#5f87ff`	rgb(95,135,255)	hsl(225,100%,68%)
70	Chartreuse3	`#5faf00`	rgb(95,175,0)	hsl(7,100%,34%)
71	DarkSeaGreen4	`#5faf5f`	rgb(95,175,95)	hsl(120,33%,52%)
72	CadetBlue	`#5faf87`	rgb(95,175,135)	hsl(150,33%,52%)
73	CadetBlue	`#5fafaf`	rgb(95,175,175)	hsl(180,33%,52%)
74	SkyBlue3	`#5fafd7`	rgb(95,175,215)	hsl(200,60%,60%)
75	SteelBlue1	`#5fafff`	rgb(95,175,255)	hsl(210,100%,68%)
76	Chartreuse3	`#5fd700`	rgb(95,215,0)	hsl(3,100%,42%)
77	PaleGreen3	`#5fd75f`	rgb(95,215,95)	hsl(120,60%,60%)
78	SeaGreen3	`#5fd787`	rgb(95,215,135)	hsl(140,60%,60%)
79	Aquamarine3	`#5fd7af`	rgb(95,215,175)	hsl(160,60%,60%)
80	MediumTurquoise	`#5fd7d7`	rgb(95,215,215)	hsl(180,60%,60%)
81	SteelBlue1	`#5fd7ff`	rgb(95,215,255)	hsl(195,100%,68%)
82	Chartreuse2	`#5fff00`	rgb(95,255,0)	hsl(7,100%,50%)
83	SeaGreen2	`#5fff5f`	rgb(95,255,95)	hsl(120,100%,68%)
84	SeaGreen1	`#5fff87`	rgb(95,255,135)	hsl(135,100%,68%)
85	SeaGreen1	`#5fffaf`	rgb(95,255,175)	hsl(150,100%,68%)
86	Aquamarine1	`#5fffd7`	rgb(95,255,215)	hsl(165,100%,68%)
87	DarkSlateGray2	`#5fffff`	rgb(95,255,255)	hsl(180,100%,68%)
88	DarkRed	`#870000`	rgb(135,0,0)	hsl(0,100%,26%)
89	DeepPink4	`#87005f`	rgb(135,0,95)	hsl(17,100%,26%)
90	DarkMagenta	`#870087`	rgb(135,0,135)	hsl(300,100%,26%)
91	DarkMagenta	`#8700af`	rgb(135,0,175)	hsl(86,100%,34%)
92	DarkViolet	`#8700d7`	rgb(135,0,215)	hsl(77,100%,42%)
93	Purple	`#8700ff`	rgb(135,0,255)	hsl(71,100%,50%)
94	Orange4	`#875f00`	rgb(135,95,0)	hsl(2,100%,26%)
95	LightPink4	`#875f5f`	rgb(135,95,95)	hsl(0,17%,45%)
96	Plum4	`#875f87`	rgb(135,95,135)	hsl(300,17%,45%)
97	MediumPurple3	`#875faf`	rgb(135,95,175)	hsl(270,33%,52%)
98	MediumPurple3	`#875fd7`	rgb(135,95,215)	hsl(260,60%,60%)
99	SlateBlue1	`#875fff`	rgb(135,95,255)	hsl(255,100%,68%)
100	Yellow4	`#878700`	rgb(135,135,0)	hsl(60,100%,26%)
101	Wheat4	`#87875f`	rgb(135,135,95)	hsl(60,17%,45%)
102	Grey53	`#878787`	rgb(135,135,135)	hsl(0,0%,52%)
103	LightSlateGrey	`#8787af`	rgb(135,135,175)	hsl(240,20%,60%)
104	MediumPurple	`#8787d7`	rgb(135,135,215)	hsl(240,50%,68%)
105	LightSlateBlue	`#8787ff`	rgb(135,135,255)	hsl(240,100%,76%)
106	Yellow4	`#87af00`	rgb(135,175,0)	hsl(3,100%,34%)
107	DarkOliveGreen3	`#87af5f`	rgb(135,175,95)	hsl(90,33%,52%)
108	DarkSeaGreen	`#87af87`	rgb(135,175,135)	hsl(120,20%,60%)
109	LightSkyBlue3	`#87afaf`	rgb(135,175,175)	hsl(180,20%,60%)
110	LightSkyBlue3	`#87afd7`	rgb(135,175,215)	hsl(210,50%,68%)
111	SkyBlue2	`#87afff`	rgb(135,175,255)	hsl(220,100%,76%)
112	Chartreuse2	`#87d700`	rgb(135,215,0)	hsl(2,100%,42%)
113	DarkOliveGreen3	`#87d75f`	rgb(135,215,95)	hsl(100,60%,60%)
114	PaleGreen3	`#87d787`	rgb(135,215,135)	hsl(120,50%,68%)
115	DarkSeaGreen3	`#87d7af`	rgb(135,215,175)	hsl(150,50%,68%)
116	DarkSlateGray3	`#87d7d7`	rgb(135,215,215)	hsl(180,50%,68%)
117	SkyBlue1	`#87d7ff`	rgb(135,215,255)	hsl(200,100%,76%)
118	Chartreuse1	`#87ff00`	rgb(135,255,0)	hsl(8,100%,50%)
119	LightGreen	`#87ff5f`	rgb(135,255,95)	hsl(105,100%,68%)
120	LightGreen	`#87ff87`	rgb(135,255,135)	hsl(120,100%,76%)
121	PaleGreen1	`#87ffaf`	rgb(135,255,175)	hsl(140,100%,76%)
122	Aquamarine1	`#87ffd7`	rgb(135,255,215)	hsl(160,100%,76%)
123	DarkSlateGray1	`#87ffff`	rgb(135,255,255)	hsl(180,100%,76%)
124	Red3	`#af0000`	rgb(175,0,0)	hsl(0,100%,34%)
125	DeepPink4	`#af005f`	rgb(175,0,95)	hsl(27,100%,34%)
126	MediumVioletRed	`#af0087`	rgb(175,0,135)	hsl(13,100%,34%)
127	Magenta3	`#af00af`	rgb(175,0,175)	hsl(300,100%,34%)
128	DarkViolet	`#af00d7`	rgb(175,0,215)	hsl(88,100%,42%)
129	Purple	`#af00ff`	rgb(175,0,255)	hsl(81,100%,50%)
130	DarkOrange3	`#af5f00`	rgb(175,95,0)	hsl(2,100%,34%)
131	IndianRed	`#af5f5f`	rgb(175,95,95)	hsl(0,33%,52%)
132	HotPink3	`#af5f87`	rgb(175,95,135)	hsl(330,33%,52%)
133	MediumOrchid3	`#af5faf`	rgb(175,95,175)	hsl(300,33%,52%)
134	MediumOrchid	`#af5fd7`	rgb(175,95,215)	hsl(280,60%,60%)
135	MediumPurple2	`#af5fff`	rgb(175,95,255)	hsl(270,100%,68%)
136	DarkGoldenrod	`#af8700`	rgb(175,135,0)	hsl(6,100%,34%)
137	LightSalmon3	`#af875f`	rgb(175,135,95)	hsl(30,33%,52%)
138	RosyBrown	`#af8787`	rgb(175,135,135)	hsl(0,20%,60%)
139	Grey63	`#af87af`	rgb(175,135,175)	hsl(300,20%,60%)
140	MediumPurple2	`#af87d7`	rgb(175,135,215)	hsl(270,50%,68%)
141	MediumPurple1	`#af87ff`	rgb(175,135,255)	hsl(260,100%,76%)
142	Gold3	`#afaf00`	rgb(175,175,0)	hsl(60,100%,34%)
143	DarkKhaki	`#afaf5f`	rgb(175,175,95)	hsl(60,33%,52%)
144	NavajoWhite3	`#afaf87`	rgb(175,175,135)	hsl(60,20%,60%)
145	Grey69	`#afafaf`	rgb(175,175,175)	hsl(0,0%,68%)
146	LightSteelBlue3	`#afafd7`	rgb(175,175,215)	hsl(240,33%,76%)
147	LightSteelBlue	`#afafff`	rgb(175,175,255)	hsl(240,100%,84%)
148	Yellow3	`#afd700`	rgb(175,215,0)	hsl(1,100%,42%)
149	DarkOliveGreen3	`#afd75f`	rgb(175,215,95)	hsl(80,60%,60%)
150	DarkSeaGreen3	`#afd787`	rgb(175,215,135)	hsl(90,50%,68%)
151	DarkSeaGreen2	`#afd7af`	rgb(175,215,175)	hsl(120,33%,76%)
152	LightCyan3	`#afd7d7`	rgb(175,215,215)	hsl(180,33%,76%)
153	LightSkyBlue1	`#afd7ff`	rgb(175,215,255)	hsl(210,100%,84%)
154	GreenYellow	`#afff00`	rgb(175,255,0)	hsl(8,100%,50%)
155	DarkOliveGreen2	`#afff5f`	rgb(175,255,95)	hsl(90,100%,68%)
156	PaleGreen1	`#afff87`	rgb(175,255,135)	hsl(100,100%,76%)
157	DarkSeaGreen2	`#afffaf`	rgb(175,255,175)	hsl(120,100%,84%)
158	DarkSeaGreen1	`#afffd7`	rgb(175,255,215)	hsl(150,100%,84%)
159	PaleTurquoise1	`#afffff`	rgb(175,255,255)	hsl(180,100%,84%)
160	Red3	`#d70000`	rgb(215,0,0)	hsl(0,100%,42%)
161	DeepPink3	`#d7005f`	rgb(215,0,95)	hsl(33,100%,42%)
162	DeepPink3	`#d70087`	rgb(215,0,135)	hsl(22,100%,42%)
163	Magenta3	`#d700af`	rgb(215,0,175)	hsl(11,100%,42%)
164	Magenta3	`#d700d7`	rgb(215,0,215)	hsl(300,100%,42%)
165	Magenta2	`#d700ff`	rgb(215,0,255)	hsl(90,100%,50%)
166	DarkOrange3	`#d75f00`	rgb(215,95,0)	hsl(6,100%,42%)
167	IndianRed	`#d75f5f`	rgb(215,95,95)	hsl(0,60%,60%)
168	HotPink3	`#d75f87`	rgb(215,95,135)	hsl(340,60%,60%)
169	HotPink2	`#d75faf`	rgb(215,95,175)	hsl(320,60%,60%)
170	Orchid	`#d75fd7`	rgb(215,95,215)	hsl(300,60%,60%)
171	MediumOrchid1	`#d75fff`	rgb(215,95,255)	hsl(285,100%,68%)
172	Orange3	`#d78700`	rgb(215,135,0)	hsl(7,100%,42%)
173	LightSalmon3	`#d7875f`	rgb(215,135,95)	hsl(20,60%,60%)
174	LightPink3	`#d78787`	rgb(215,135,135)	hsl(0,50%,68%)
175	Pink3	`#d787af`	rgb(215,135,175)	hsl(330,50%,68%)
176	Plum3	`#d787d7`	rgb(215,135,215)	hsl(300,50%,68%)
177	Violet	`#d787ff`	rgb(215,135,255)	hsl(280,100%,76%)
178	Gold3	`#d7af00`	rgb(215,175,0)	hsl(8,100%,42%)
179	LightGoldenrod3	`#d7af5f`	rgb(215,175,95)	hsl(40,60%,60%)
180	Tan	`#d7af87`	rgb(215,175,135)	hsl(30,50%,68%)
181	MistyRose3	`#d7afaf`	rgb(215,175,175)	hsl(0,33%,76%)
182	Thistle3	`#d7afd7`	rgb(215,175,215)	hsl(300,33%,76%)
183	Plum2	`#d7afff`	rgb(215,175,255)	hsl(270,100%,84%)
184	Yellow3	`#d7d700`	rgb(215,215,0)	hsl(60,100%,42%)
185	Khaki3	`#d7d75f`	rgb(215,215,95)	hsl(60,60%,60%)
186	LightGoldenrod2	`#d7d787`	rgb(215,215,135)	hsl(60,50%,68%)
187	LightYellow3	`#d7d7af`	rgb(215,215,175)	hsl(60,33%,76%)
188	Grey84	`#d7d7d7`	rgb(215,215,215)	hsl(0,0%,84%)
189	LightSteelBlue1	`#d7d7ff`	rgb(215,215,255)	hsl(240,100%,92%)
190	Yellow2	`#d7ff00`	rgb(215,255,0)	hsl(9,100%,50%)
191	DarkOliveGreen1	`#d7ff5f`	rgb(215,255,95)	hsl(75,100%,68%)
192	DarkOliveGreen1	`#d7ff87`	rgb(215,255,135)	hsl(80,100%,76%)
193	DarkSeaGreen1	`#d7ffaf`	rgb(215,255,175)	hsl(90,100%,84%)
194	Honeydew2	`#d7ffd7`	rgb(215,255,215)	hsl(120,100%,92%)
195	LightCyan1	`#d7ffff`	rgb(215,255,255)	hsl(180,100%,92%)
196	Red1	`#ff0000`	rgb(255,0,0)	hsl(0,100%,50%)
197	DeepPink2	`#ff005f`	rgb(255,0,95)	hsl(37,100%,50%)
198	DeepPink1	`#ff0087`	rgb(255,0,135)	hsl(28,100%,50%)
199	DeepPink1	`#ff00af`	rgb(255,0,175)	hsl(18,100%,50%)
200	Magenta2	`#ff00d7`	rgb(255,0,215)	hsl(09,100%,50%)
201	Magenta1	`#ff00ff`	rgb(255,0,255)	hsl(300,100%,50%)
202	OrangeRed1	`#ff5f00`	rgb(255,95,0)	hsl(2,100%,50%)
203	IndianRed1	`#ff5f5f`	rgb(255,95,95)	hsl(0,100%,68%)
204	IndianRed1	`#ff5f87`	rgb(255,95,135)	hsl(345,100%,68%)
205	HotPink	`#ff5faf`	rgb(255,95,175)	hsl(330,100%,68%)
206	HotPink	`#ff5fd7`	rgb(255,95,215)	hsl(315,100%,68%)
207	MediumOrchid1	`#ff5fff`	rgb(255,95,255)	hsl(300,100%,68%)
208	DarkOrange	`#ff8700`	rgb(255,135,0)	hsl(1,100%,50%)
209	Salmon1	`#ff875f`	rgb(255,135,95)	hsl(15,100%,68%)
210	LightCoral	`#ff8787`	rgb(255,135,135)	hsl(0,100%,76%)
211	PaleVioletRed1	`#ff87af`	rgb(255,135,175)	hsl(340,100%,76%)
212	Orchid2	`#ff87d7`	rgb(255,135,215)	hsl(320,100%,76%)
213	Orchid1	`#ff87ff`	rgb(255,135,255)	hsl(300,100%,76%)
214	Orange1	`#ffaf00`	rgb(255,175,0)	hsl(1,100%,50%)
215	SandyBrown	`#ffaf5f`	rgb(255,175,95)	hsl(30,100%,68%)
216	LightSalmon1	`#ffaf87`	rgb(255,175,135)	hsl(20,100%,76%)
217	LightPink1	`#ffafaf`	rgb(255,175,175)	hsl(0,100%,84%)
218	Pink1	`#ffafd7`	rgb(255,175,215)	hsl(330,100%,84%)
219	Plum1	`#ffafff`	rgb(255,175,255)	hsl(300,100%,84%)
220	Gold1	`#ffd700`	rgb(255,215,0)	hsl(0,100%,50%)
221	LightGoldenrod2	`#ffd75f`	rgb(255,215,95)	hsl(45,100%,68%)
222	LightGoldenrod2	`#ffd787`	rgb(255,215,135)	hsl(40,100%,76%)
223	NavajoWhite1	`#ffd7af`	rgb(255,215,175)	hsl(30,100%,84%)
224	MistyRose1	`#ffd7d7`	rgb(255,215,215)	hsl(0,100%,92%)
225	Thistle1	`#ffd7ff`	rgb(255,215,255)	hsl(300,100%,92%)
226	Yellow1	`#ffff00`	rgb(255,255,0)	hsl(60,100%,50%)
227	LightGoldenrod1	`#ffff5f`	rgb(255,255,95)	hsl(60,100%,68%)
228	Khaki1	`#ffff87`	rgb(255,255,135)	hsl(60,100%,76%)
229	Wheat1	`#ffffaf`	rgb(255,255,175)	hsl(60,100%,84%)
230	Cornsilk1	`#ffffd7`	rgb(255,255,215)	hsl(60,100%,92%)
231	Grey100	`#ffffff`	rgb(255,255,255)	hsl(0,0%,100%)
232	Grey3	`#080808`	rgb(8,8,8)	hsl(0,0%,3%)
233	Grey7	`#121212`	rgb(18,18,18)	hsl(0,0%,7%)
234	Grey11	`#1c1c1c`	rgb(28,28,28)	hsl(0,0%,10%)
235	Grey15	`#262626`	rgb(38,38,38)	hsl(0,0%,14%)
236	Grey19	`#303030`	rgb(48,48,48)	hsl(0,0%,18%)
237	Grey23	`#3a3a3a`	rgb(58,58,58)	hsl(0,0%,22%)
238	Grey27	`#444444`	rgb(68,68,68)	hsl(0,0%,26%)
239	Grey30	`#4e4e4e`	rgb(78,78,78)	hsl(0,0%,30%)
240	Grey35	`#585858`	rgb(88,88,88)	hsl(0,0%,34%)
241	Grey39	`#626262`	rgb(98,98,98)	hsl(0,0%,37%)
242	Grey42	`#6c6c6c`	rgb(108,108,108)	hsl(0,0%,40%)
243	Grey46	`#767676`	rgb(118,118,118)	hsl(0,0%,46%)
244	Grey50	`#808080`	rgb(128,128,128)	hsl(0,0%,50%)
245	Grey54	`#8a8a8a`	rgb(138,138,138)	hsl(0,0%,54%)
246	Grey58	`#949494`	rgb(148,148,148)	hsl(0,0%,58%)
247	Grey62	`#9e9e9e`	rgb(158,158,158)	hsl(0,0%,61%)
248	Grey66	`#a8a8a8`	rgb(168,168,168)	hsl(0,0%,65%)
249	Grey70	`#b2b2b2`	rgb(178,178,178)	hsl(0,0%,69%)
250	Grey74	`#bcbcbc`	rgb(188,188,188)	hsl(0,0%,73%)
251	Grey78	`#c6c6c6`	rgb(198,198,198)	hsl(0,0%,77%)
252	Grey82	`#d0d0d0`	rgb(208,208,208)	hsl(0,0%,81%)
253	Grey85	`#dadada`	rgb(218,218,218)	hsl(0,0%,85%)
254	Grey89	`#e4e4e4`	rgb(228,228,228)	hsl(0,0%,89%)
255	Grey93	`#eeeeee`	rgb(238,238,238)	hsl(0,0%,93%)

ARP in Linux

Command	Description
`arp`	View the ARP table
`arp -a`	View the ARP table
`arp -n`	View the ARP table (don't resolve names)
`arp -d `	Delete an entry from the ARP table
`arp -s `	Add an entry to the ARP table
`arp -i -s `	Add an entry to the ARP table for a specific interface
`arp -i -d `	Delete an entry from the ARP table for a specific interface
`arp -i -n`	View the ARP table for a specific interface
`arp -i -a`	View the ARP table for a specific interface
`ip neigh show`	View the ARP table
`ip neigh show `	View the ARP table for a specific IP address
`ip neigh add lladdr dev `	Add an entry to the ARP table
`ip neigh change lladdr dev `	Change an entry in the ARP table
`ip neigh del dev `	Delete an entry from the ARP table
`ip neigh flush dev `	Flush the ARP table for a specific interface
`ip neigh flush all`	Flush the ARP table
`ip -s neigh show`	Show ARP statistics
`ip -s neigh flush all`	Flush the ARP cache

AWK

Command	Description
`awk '/pattern/ {print $1}'`	standard Unix shells
`awk '/pattern/ {print "$1"}'`	compiled with DJGPP, Cygwin
`awk "/pattern/ {print \"$1\"}"`	GnuWin32, UnxUtils, Mingw
`awk '1;{print ""}'`	double space a file
`awk 'BEGIN{ORS="\n\n"};1'`	double space a file
`awk 'NF{print $0 "\n"}'`	double space a file which already has blank lines
`awk '1;{print "\n"}'`	triple space a file
`awk '{print FNR "\t" $0}' files*`	precede each line by its line number
`awk '{print NR "\t" $0}' files*`	precede each line by its line number for all files together
`awk '{printf("%5d : %s\n", NR,$0)}'`	number each line of a file
`awk 'NF{$0=++a " :" $0};1'`	number each line of a file, but only print numbers if line is not blank
`awk 'END{print NR}'`	count lines (emulates "wc -l")
`awk '{s=0; for (i=1; i<=NF; i++) s=s+$i; print s}'`	print the sums of the fields of every line
`awk '{for (i=1; i<=NF; i++) s=s+$i}; END{print s}'`	add all fields in all lines and print the sum
`awk '{for (i=1; i<=NF; i++) if ($i < 0) $i = -$i; print }'`	print every line after replacing each field with its absolute value
`awk '{for (i=1; i<=NF; i++) $i = ($i < 0) ? -$i : $i; print }'`	print every line after replacing each field with its absolute value
`awk '{ total = total + NF }; END {print total}' file`	print the total number of fields ("words") in all lines
`awk '/Beth/{n++}; END {print n+0}' file`	print the total number of lines that contain "Beth"
`awk '$1 > max {max=$1; maxline=$0}; END{ print max, maxline}'`	print the largest first field and the line that contains it
`awk '{ print NF ":" $0 }'`	print the number of fields in each line, followed by the line
`awk '{ print $NF }'`	print the last field of each line
`awk '{ field = $NF }; END{ print field }'`	print the last field of the last line
`awk 'NF > 4'`	print every line with more than 4 fields
`awk '$NF > 4'`	print every line where the value of the last field is > 4

Certutil

Command	Description
`certutil -store MY`	List personal certificates
`certutil -store ROOT`	List root certificates
`certutil -store CA`	List intermediate certificates
`certutil -addstore -f "ROOT" new-root-certificate.crt`	Add a root certificate
`certutil -delstore "ROOT" serial-number-hex`	Remove a root certificate
`certutil -addstore -f "CA" new-intermediate-certificate.crt`	Add an intermediate certificate
`certutil -delstore "CA" serial-number-hex`	Remove an intermediate certificate
`certutil -addstore -f "MY" new-personal-certificate.pfx`	Add a personal certificate
`certutil -delstore "MY" serial-number-hex`	Remove a personal certificate
`certutil -dump certificate.crt`	Display certificate information
`certutil -encode certificate.crt encoded-certificate.txt`	Encode a certificate
`certutil -decode encoded-certificate.txt decoded-certificate.crt`	Decode a certificate
`certutil -hashfile file.txt SHA256`	Calculate the SHA256 hash of a file

DNS

Commonly used DNS Records

Type	Description
**A**	The record that holds the IP address of a domain.
**AAAA**	The record that contains the IPv6 address for a domain (as opposed to A records, which list the IPv4 address).
**CNAME**	Forwards one domain or subdomain to another domain, does NOT provide an IP address.
**MX**	Directs mail to an email server.
**TXT**	Lets an admin store text notes in the record. These records are often used for email security.
**NS**	Stores the name server for a DNS entry.
**SOA**	Stores admin information about a domain.
**SRV**	Specifies a port for specific services.
**PTR**	Provides a domain name in reverse-lookups.

Less commonly used DNS Records

Type	Description
**APL**	The ‘address prefix list’ is an experiment record that specifies lists of address ranges.
**AFSDB**	This record is used for clients of the Andrew File System (AFS) developed by Carnegie Melon. The AFSDB record functions to find other AFS cells.
**CAA**	This is the ‘certification authority authorization’ record, it allows domain owners state which certificate authorities can issue certificates for that domain. If no CAA record exists, then anyone can issue a certificate for the domain. These records are also inherited by subdomains.
**DNSKEY**	The ‘DNS Key Record’ contains a public key used to verify Domain Name System Security Extension (DNSSEC) signatures
**CDNSKEY**	This is a child copy of the DNSKEY record, meant to be transferred to a parent.
**CERT**	The ‘certificate record’ stores public key certificates.
**DCHID**	The ‘DHCP Identifier’ stores info for the Dynamic Host Configuration Protocol (DHCP), a standardized network protocol used on IP networks.
**DNAME**	The ‘delegation name’ record creates a domain alias, just like CNAME, but this alias will redirect all subdomains as well. For instance if the owner of ‘example.com’ bought the domain ‘website.net’ and gave it a DNAME record that points to ‘example.com’, then that pointer would also extend to ‘blog.website.net’ and any other subdomains.
**HIP**	This record uses ‘Host identity protocol’, a way to separate the roles of an IP address; this record is used most often in mobile computing.
**IPSECKEY**	The ‘IPSEC key’ record works with the Internet Protocol Security (IPSEC), an end-to-end security protocol framework and part of the Internet Protocol Suite (TCP/IP).
**LOC**	The ‘location’ record contains geographical information for a domain in the form of longitude and latitude coordinates.
**NAPTR**	The ‘name authority pointer’ record can be combined with an SRV record to dynamically create URI’s to point to based on a regular expression.
**NSEC**	The ‘next secure record’ is part of DNSSEC, and it’s used to prove that a requested DNS resource record does not exist.
**RRSIG**	The ‘resource record signature’ is a record to store digital signatures used to authenticate records in accordance with DNSSEC.
**RP**	This is the ‘responsible person’ record and it stores the email address of the person responsible for the domain.
**SSHFP**	This record stores the ‘SSH public key fingerprints’; SSH stands for Secure Shell and it’s a cryptographic networking protocol for secure communication over an unsecure network.

Ethtool

Displaying Information

Command	Description
`ethtool `	Display information about a specific network interface
`ethtool -i `	Display driver information
`ethtool -a `	Display all settings
`ethtool -k `	Display offload settings
`ethtool -c `	Display coalescing settings
`ethtool -g `	Display ring buffer settings
`ethtool -l `	Display large receive offload settings
`ethtool -S `	Display statistics
`ethtool -t `	Test the network interface for offloading capabilities
`ethtool -T `	Display time stamping settings
`ethtool -x `	Display channel settings
`ethtool -P `	Display permanent MAC address
`ethtool -N `	Display offload settings
`ethtool -u `	Display bus information
`ethtool -d `	Display register dump
`ethtool -g `	Display ring buffer settings

Setting Parameters

Command	Description
`ethtool -G `	Set ring buffer settings
`ethtool -L `	Set large receive offload settings
`ethtool -A `	Set pause parameters
`ethtool -C `	Set coalescing settings
`ethtool -K `	Set offload settings
`ethtool -N `	Set offload settings
`ethtool -p `	Blink the LED on the network interface
`ethtool -r `	Reset the network interface

GIT

Repository Management

Command	Description
`git init`	Initialize a new Git repository
`git clone `	Clone a remote repository
`git status`	Show the working tree status
`git add `	Add a file to the staging area
`git commit -m `	Commit changes to the repository
`git push`	Push changes to the remote repository
`git pull`	Pull changes from the remote repository
`git fetch`	Fetch changes from the remote repository
`git merge `	Merge a branch into the current branch
`git branch`	List all branches
`git branch `	Create a new branch
`git checkout `	Switch to a branch
`git checkout -b `	Create and switch to a new branch
`git branch -d `	Delete a branch
`git log`	Show commit logs
`git diff`	Show changes between commits
`git blame `	Show who changed each line in a file
`git reflog`	Show a log of changes to HEAD
`git reset --hard `	Reset the repository to a commit
`git revert `	Revert a commit
`git stash`	Stash changes in the working directory
`git stash pop`	Apply stashed changes to the working directory
`git tag `	Create a tag for a commit

Configuration

Command	Description
`git config --global user.name `	Set the user name for Git
`git config --global user.email `	Set the user email for Git
`git config --global core.editor `	Set the default text editor for Git
`git config --global color.ui auto`	Enable colored output for Git

Remote Repositories

Command	Description
`git remote add `	Add a remote repository
`git remote -v`	List remote repositories
`git remote show `	Show information about a remote repository
`git remote rename `	Rename a remote repository
`git remote remove `	Remove a remote repository

HTTP Status Codes

Categories

Code	Description
**1XX**	Informational Requests
**2XX**	Successful Requests
**3XX**	Redirects
**4XX**	Client Errors
**5XX**	Server Errors

Complete List

Code	Name	Description
100	Continue	Everything so far is OK and that the client should continue with the request or ignore it if it is already finished.
101	Switching Protocols	The client has asked the server to change protocols and the server has agreed to do so.
102	Processing	The server has received and is processing the request, but that it does not have a final response yet.
103	Early Hints	Used to return some response headers before final HTTP message.
200	OK	Successful request.
201	Created	The server acknowledged the created resource.
202	Accepted	The client's request has been received but the server is still processing it.
203	Non-Authoritative Information	The response that the server sent to the client is not the same as it was when the server sent it.
204	No Content	There is no content to send for this request
205	Reset Content	Tells the user agent to reset the document which sent this request.
206	Partial Content	This response code is used when the range-header is sent from the client to request only part of a resource.
207	Multi-Status	Conveys information about multiple resources, for situations where multiple status codes might be appropriate.
208	Already Reported	The members of a DAV binding have already been enumerated in a preceding part of the multi-status response.
226	IM Used	IM is a specific extension of the HTTP protocol. The extension allows a HTTP server to send diffs (changes) of resources to clients.
300	Multiple Choices	The request has more than one possible response. The user agent should choose one.
301	Moved Permanently	The URL of the requested resource has been changed permanently. The new URL is given in the response.
302	Found	This response code means that the URI of requested resource has been changed temporarily
303	See Other	The server sent this response to direct the client to get the requested resource at another URI with a GET request.
304	Not Modified	It tells the client that the response has not been modified, so the client can continue to use the same cached version of the response.
305	Use Proxy	Defined in a previous version of the HTTP specification to indicate that a requested response must be accessed by a proxy. (discontinued)
307	Temporary Redirect	The server sends this response to direct the client to get the requested resource at another URI with same method that was used in the prior request.
308	Permanent Redirect	This means that the resource is now permanently located at another URI, specified by the Location: HTTP Response header.
400	Bad Request	The server could not understand the request
401	Unauthorized	The client didn't authenticate himself.
402	Payment Required	This response code is reserved for future use. The initial aim for creating this code was using it for digital payment systems, however this status code is used very rarely and no standard convention exists.
403	Forbidden	The client does not have access rights to the content
404	Not Found	The server can not find the requested resource
405	Method Not Allowed	The request method is known by the server but is not supported by the target resource
406	Not Acceptable	The reponse doens't conforms to the creteria given by the client
407	Proxy Authentication Required	This is similar to 401 Unauthorized but authentication is needed to be done by a proxy.
408	Request Timeout	This response is sent on an idle connection by some servers, even without any previous request by the client.
409	Conflict	This response is sent when a request conflicts with the current state of the server.
410	Gone	This response is sent when the requested content has been permanently deleted from server, with no forwarding address.
411	Length Required	Server rejected the request because the Content-Length header field is not defined and the server requires it.
412	Precondition Failed	Access to the target resource has been denied.
413	Payload Too Large	Request entity is larger than limits defined by server.
414	Request-URI Too Long	The URI requested by the client is longer than the server is willing to interpret.
415	Unsupported Media Type	The media format is not supported by the server.
416	Requested Range Not Satisfiable	The range specified by the Range header field in the request cannot be fulfilled.
417	Expectation Failed	the expectation indicated by the Expect request header field cannot be met by the server.
418	I'm a teapot	The server refuses the attempt to brew coffee with a teapot.
421	Misdirected Request	The request was directed at a server that is not able to produce a response.
422	Unprocessable Entity	The request was well-formed but was unable to be followed due to semantic errors.
423	Locked	The resource that is being accessed is locked.
424	Failed Dependency	The request failed due to failure of a previous request.
426	Upgrade Required	The server refuses to perform the request using the current protocol but might be willing to do so after the client upgrades to a different protocol.
428	Precondition Required	his response is intended to prevent the 'lost update' problem, where a client GETs a resource's state, modifies it and PUTs it back to the server, when meanwhile a third party has modified the state on the server, leading to a conflict.
429	Too Many Requests	The user has sent too many requests in a given amount of time
431	Request Header Fields Too Large	The server is can't process the request because its header fields are too large.
444	Connection Closed Without Response	The connection opened, but no data was written.
451	Unavailable For Legal Reasons	The user agent requested a resource that cannot legally be provided (such as a web page censored by a government)
499	Client Closed Request	The client closed the connection, despite the server was processing the request already.
500	Internal Server Error	The server has encountered a situation it does not know how to handle.
501	Not Implemented	The request method is not supported by the server and cannot be handled.
502	Bad Gateway	This error response means that the server, while working as a gateway to get a response needed to handle the request, got an invalid response.
503	Service Unavailable	The server is not ready to handle the request.
504	Gateway Timeout	This error response is given when the server is acting as a gateway and cannot get a response in time.
505	HTTP Version Not Supported	The HTTP version used in the request is not supported by the server.
506	Variant Also Negotiates	the chosen variant resource is configured to engage in transparent content negotiation itself, and is therefore not a proper end point in the negotiation process.
507	Insufficient Storage	The method could not be performed on the resource because the server is unable to store the representation needed to successfully complete the request.
508	Loop Detected	The server detected an infinite loop while processing the request.
510	Not Extended	Further extensions to the request are required for the server to fulfill it.
511	Network Authentication Required	Indicates that the client needs to authenticate to gain network access.
599	Network Connect Timeout Error	The connection timed out due to a overloaded server, a hardware error or a infrastructure error.

kubectl

Contexts and Configuration

Command	Description
`kubectl config view`	Show the current kubeconfig file
`kubectl config get-contexts`	List all contexts in the kubeconfig file
`kubectl config current-context`	Show the current context
`kubectl config use-context `	Change the current context
`kubectl config set-context --namespace=`	Set the namespace for a context
`kubectl config set-context --cluster=`	Set the cluster for a context
`kubectl config set-context --user=`	Set the user for a context
`kubectl config set-context --namespace= --cluster= --user=`	Set all context properties

Cluster Management

Command	Description
`kubectl cluster-info`	Display addresses of the master and services
`kubectl get nodes`	List all nodes in the cluster
`kubectl get pods`	List all pods in the cluster
`kubectl get services`	List all services in the cluster
`kubectl get deployments`	List all deployments in the cluster
`kubectl get namespaces`	List all namespaces in the cluster
`kubectl get events`	List all events in the cluster

Resource Management

Command	Description
`kubectl apply -f `	Apply a configuration file
`kubectl delete -f `	Delete a configuration file
`kubectl get `	List all resources of a type
`kubectl describe `	Describe a resource
`kubectl edit `	Edit a resource
`kubectl exec -it -- `	Execute a command in a pod

Pod Management

Command	Description
`kubectl run --image=`	Create a new pod
`kubectl delete pod `	Delete a pod
`kubectl get pod `	Get details of a pod
`kubectl describe pod `	Describe a pod
`kubectl logs `	Show logs of a pod
`kubectl exec -it -- /bin/bash`	Execute a command in a pod
`kubectl cp : `	Copy files from a pod
`kubectl top node`	Show metrics for all nodes
`kubectl top pod`	Show metrics for all pods
`kubectl top pod `	Show metrics for a specific pod

Service Management

Command	Description
`kubectl expose pod --port=444 --target-port=555`	Expose a pod as a service
`kubectl delete service `	Delete a service
`kubectl get service `	Get details of a service
`kubectl describe service `	Describe a service

Deployment Management

Command	Description
`kubectl create deployment --image=`	Create a new deployment
`kubectl delete deployment `	Delete a deployment
`kubectl get deployment `	Get details of a deployment
`kubectl describe deployment `	Describe a deployment
`kubectl scale deployment --replicas=3`	Scale a deployment to 3 replicas
`kubectl rollout status deployment/`	Check the status of a deployment rollout
`kubectl rollout history deployment/`	Show the history of a deployment rollout
`kubectl rollout undo deployment/`	Rollback a deployment to the previous version
`kubectl rollout undo deployment/ --to-revision=1`	Rollback a deployment to a specific revision

Namespace Management

Command	Description
`kubectl create namespace `	Create a new namespace
`kubectl delete namespace `	Delete a namespace
`kubectl get namespace `	Get details of a namespace
`kubectl describe namespace `	Describe a namespace

OpenSSL

Certificate Management

Command	Description
`openssl req -new -key -out `	Generate a new certificate signing request
`openssl req -x509 -key -in -out `	Generate a self-signed certificate
`openssl x509 -in -text -noout`	Display the details of a certificate
`openssl x509 -in -pubkey -noout`	Extract the public key from a certificate
`openssl x509 -in -fingerprint -noout`	Display the fingerprint of a certificate

Key Management

Command	Description
`openssl genrsa -out 2048`	Generate a new RSA private key
`openssl rsa -in -pubout -out `	Extract the public key from a private key
`openssl rsa -in -out `	Convert a private key to a different format
`openssl rand -hex 16`	Generate a random hex string

Certificate Signing

Command	Description
`openssl ca -in -out `	Sign a certificate request
`openssl ca -config -in -out `	Sign a certificate request with a custom configuration
`openssl verify -CAfile `	Verify a certificate against a CA file

Certificate Conversion

Command	Description
`openssl pkcs12 -export -in -inkey -out `	Convert a certificate and key to PKCS#12 format
`openssl pkcs12 -in -out -nodes`	Extract a certificate and key from a PKCS#12 file
`openssl x509 -in -outform DER -out `	Convert a certificate to DER format
`openssl x509 -in -outform PEM -out `	Convert a certificate to PEM format

Encryption and Decryption

Command	Description
`openssl enc -aes-256-cbc -salt -in -out `	Encrypt a file with AES-256-CBC
`openssl enc -d -aes-256-cbc -in -out `	Decrypt a file encrypted with AES-256-CBC
`openssl dgst -sha256 FILE`	Calculate the SHA-256 hash of a file
`openssl dgst -md5 FILE`	Calculate the MD5 hash of a file

Miscellaneous

Command	Description
`openssl version`	Display the OpenSSL version
`openssl s_client -connect :`	Connect to a server using SSL/TLS
`openssl s_server -accept -cert -key `	Start an SSL/TLS server
`openssl speed`	Run benchmark tests on OpenSSL algorithms
`openssl ciphers -v`	List all available ciphers
`openssl rand -base64 32`	Generate a random base64 string
`openssl rand -base64 -out 32`	Generate a random base64 string and save it to a file
`openssl rand -out 32`	Generate a random binary string and save it to a file
`openssl rand -hex 32`	Generate a random hex string

PostgreSQL

Connect to PostgreSQL

Command	Description
`psql -U postgres`	Connect to PostgreSQL as the `postgres` user
`psql -U -d `	Connect to PostgreSQL as a specific user and database
`psql -U -d -h `	Connect to PostgreSQL on a specific host

PostreSQL CLI Commands

Command	Description
`\c `	Connect to a specific database
`\password `	Change password for a specific user
`\l`	List all databases
`\d+`	Show detailed information about various database objects
`\dt`	List all tables in the current database
`\du`	List all users
`\df`	List all functions
`\dv`	List all views
`\dn`	List all schemas
`\dp`	List all permissions
`\di`	List all indexes
`\ds`	List all sequences
`\d+`	Show detailed information about various database objects
`\q`	Quit psql
`\x`	Toggle expanded output

Backup and Restore

Command	Description
`pg_dump > backup.sql`	Backup a database to a file
`psql < backup.sql`	Restore a database from a file

SQL

Data Definition Language (DDL)

Command	Description
`CREATE DATABASE `	Create a new database
`DROP DATABASE `	Delete a database
`CREATE TABLE ( , )` Create a new table `DROP TABLE ` Delete a table `ALTER TABLE ADD COLUMN ` Add a new column to a table `ALTER TABLE DROP COLUMN ` Remove a column from a table `ALTER TABLE RENAME COLUMN TO ` Rename a column in a table `ALTER TABLE RENAME TO ` Rename a table `TRUNCATE TABLE ` Remove all rows from a table `CREATE INDEX INDEXNAME ON ()` Create an index on a table `DROP INDEX INDEXNAME` Remove an index from a table Data Manipulation Language (DML) Command Description `INSERT INTO (, ) VALUES (, )` Insert a new row into a table `SELECT * FROM ` Retrieve all rows from a table `UPDATE SET = WHERE = ` Update rows in a table `DELETE FROM WHERE = ` Delete rows from a table Data Query Language (DQL) Command Description `SELECT , FROM ` Retrieve specific columns from a table `SELECT * FROM WHERE = VALUE` Retrieve rows that match a condition `SELECT * FROM ORDER BY ` Retrieve rows sorted by a column `SELECT * FROM LIMIT N` Retrieve the first N rows from a table `SELECT * FROM OFFSET N` Retrieve rows starting from the Nth row `SELECT * FROM JOIN ON . = .` Retrieve rows from two tables that match a condition `SELECT * FROM UNION SELECT * FROM ` Retrieve rows from two tables without duplicates `SELECT * FROM GROUP BY ` Group rows that have the same value in a column `SELECT * FROM HAVING COUNT() > N` Filter grouped rows that have more than N rows `SELECT * FROM WHERE IN (, )` Retrieve rows where a column value matches any value in a list `SELECT * FROM WHERE BETWEEN AND ` Retrieve rows where a column value is within a range `SELECT * FROM WHERE LIKE '%'` Retrieve rows where a column value matches a pattern `SELECT * FROM WHERE IS NULL` Retrieve rows where a column value is NULL `SELECT * FROM WHERE IS NOT NULL` Retrieve rows where a column value is not NULL Data Control Language (DCL) Command Description `GRANT PERMISSIONS ON TO ` Grant permissions to a user `REVOKE PERMISSIONS ON FROM ` Revoke permissions from a user Transaction Control Language (TCL) Command Description `BEGIN TRANSACTION` Start a new transaction `COMMIT` Save changes to the database `ROLLBACK` Discard changes to the database `SAVEPOINT ` Create a savepoint in a transaction `ROLLBACK TO SAVEPOINT ` Rollback to a savepoint in a transaction `RELEASE SAVEPOINT ` Remove a savepoint in a transaction System Commands Command Description `SHOW DATABASES` List all databases `SHOW TABLES` List all tables in the current database `SHOW COLUMNS FROM ` List all columns in a table `SHOW INDEXES FROM ` List all indexes in a table `SHOW CREATE TABLE ` Show the SQL statement that creates a table `DESCRIBE ` Show the structure of a table `EXPLAIN SELECT * FROM ` Show the execution plan of a query `SET autocommit = 0` Disable autocommit mode `SET autocommit = 1` Enable autocommit mode `SET FOREIGN_KEY_CHECKS = 0` Disable foreign key checks User Commands Command Description `CREATE ''@'' IDENTIFIED BY ''` Create a new user `DROP ''@''` Delete a user `ALTER ''@'' IDENTIFIED BY ''` Change password for a user `GRANT ALL PRIVILEGES ON TO ''@''` Grant all privileges to a user `REVOKE ALL PRIVILEGES ON FROM ''@''` Revoke all privileges from a user `FLUSH PRIVILEGES` Reload privileges from the grant tables Terraform Format and Validate Command Description `terraform fmt` Reformat your configuration in the standard style `terraform validate` Check whether the configuration is valid Initialize Working Directory Command Description `terraform init` Prepare your working directory for other commands Plan, Deploy and Cleanup Command Description `terraform apply --auto-approve` Create or update infrastructure without confirmation prompt `terraform destroy --auto-approve` Destroy previously-created infrastructure without confirmation prompt `terraform plan -out plan.out` Output the deployment plan to plan.out `terraform apply plan.out` Use the plan.out to deploy infrastructure `terraform plan -destroy` Outputs a destroy plan `terraform apply -target=aws_instance.myinstance` Only apply/deploy changes to targeted resource `terraform apply -var myregion=us-east-1` Pass a variable via CLI while applying a configuration `terraform apply -lock=true` Lock the state file so it can't be modified `terraform apply refresh=false` Do not reconcile state file with real-world resources `terraform apply --parallelism=5` Number of simultaneous resource operations `terraform refresh` Reconcile the state in Terraform state file with real-world resources `terraform providers` Get informatino about providers used in the current configuration Workspaces Command Description `terraform workspace new ` Create a new workspace `terraform workspace select default` Change to a workspace `terraform workspace list` List all workspaces State Manipulation Command Description `terraform state show aws_instance.myinstance` Show details stored in the Terraform state file `terraform state pull > terraform.tfstate` Output Terraform state to a file `terraform state mv aws_iam_role.my_ssm_role module.mymodule` Move a resource tracked via state to different module `terraform state replace-provider hashicorp/aws registry.custom.com/aws` Replace an existing provider with another `terraform state list` List all resources tracked in the Terraform state file `terraform state rm aws_instance.myinstance` Unmanage a resource, delete it from the Terraform state file Import and Outputs Command Description `terraform import . ` Import a Resource `terraform output` List all outputs `terraform output ` List a specific output `terraform output -json` List all outputs in JSON format Terraform Cloud Command Description `terraform login` Login to Terraform Cloud with an API token `terraform logout` Logout from Terraform Cloud ZFS File System Management Command Description `zfs list` List ZFS file systems `zfs create /` Create a ZFS file system `zfs set = /` Set ZFS file system properties `zfs get /` Get ZFS file system properties `zfs destroy /` Destroy a ZFS file system Pool Management Command Description `zpool list` List ZFS pools `zpool create ` Create a ZFS pool `zpool destroy ` Destroy a ZFS pool `zpool iostat` Display ZFS pool I/O statistics `zpool status` Display ZFS pool status `zpool history` Display ZFS pool history `zpool events` Display ZFS pool events `zpool scrub ` Scrub a ZFS pool `zpool clear ` Clear ZFS pool errors `zpool trim ` Trim a ZFS pool `zpool add ` Add a device to a ZFS pool `zpool remove ` Remove a device from a ZFS pool `zpool replace ` Replace a device in a ZFS pool `zpool offline ` Offline a device in a ZFS pool Snapshots Command Description `zfs list -t snapshot` List ZFS snapshots `zfs snapshot /@` Create a ZFS snapshot `zfs rollback /@` Rollback a ZFS snapshot `zfs diff /@ /@` Compare ZFS snapshots `zfs send /@` Send ZFS snapshots `zfs receive /` Receive ZFS snapshots Clones Command Description `zfs clone /@ /` Create a ZFS clone `zfs promote /` Promote a ZFS clone `zfs rollback /` Rollback a ZFS clone `zfs destroy /` Destroy a ZFS clone