https://github.com/claudio-code/learning-shell-script
I am learning how to make all magics :dizzy: for automations using bash.
https://github.com/claudio-code/learning-shell-script
automation magics shell-script
Last synced: 3 months ago
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I am learning how to make all magics :dizzy: for automations using bash.
- Host: GitHub
- URL: https://github.com/claudio-code/learning-shell-script
- Owner: Claudio-code
- Created: 2021-05-09T06:41:03.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2022-12-17T23:33:34.000Z (over 2 years ago)
- Last Synced: 2025-02-15T20:54:11.542Z (4 months ago)
- Topics: automation, magics, shell-script
- Language: Shell
- Homepage:
- Size: 16.6 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
:penguin: Shell Script :penguin:
## About Project
Its project has the objective of expanding my arcane powers in the shell script art :scroll:.
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### String
| Comparison of strings | Description |
| ------------------- | ------------------- |
| string1 = string2 | return true if strings are equals |
| string1 != string2 | return true if strings not is equals |
| -n string1 | return true if string not null |
| -z string1 | return true if string is null |
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### Number
| Comparison of number | Description |
| ------------------- | ------------------- |
| expr1 -eq expr2 | return true if values is equals |
| expr1 -ne expr2 | return true if values not is equals |
| expr1 -gt expr2 | return true if expr1 is greater of expr2 |
| expr1 -ge expr2 | return true if expr1 is greater or equals of expr2 |
| expr1 -lt expr2 | return true if expr1 is less of expr2 |
| expr1 -le expr2 | return true if expr1 is less or equals of expr2 |
| ! expr1 | negate result of expression (if result is true turn false) |
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### Files
| Comparison of files | Description |
| ------------------- | ------------------- |
| -d file | return if it is a directory |
| -e file | return true if it is file exist |
| -f file | return true if it is file exist (more used because it is more portable) |
| -g file | return true GID is enabled in file |
| -r file | return true if it is file have read permission |
| -s file | return true if it is file have bigger size different of zero |
| -u | return true if UID is enabled file |
| -w | return true if file have write permission |
| -x | return true if file have execution permission |
### Simple colors table
| color name | value |
| ----------- | ------- |
| Color_Off | '\033[0m' |
| Black | '\033[0;30m' |
| Red | '\033[0;31m' |
| Green | '\033[0;32m' |
| Yellow | '\033[0;33m' |
| Blue | '\033[0;34m' |
| Purple | '\033[0;35m' |
| Cyan | '\033[0;36m' |
| White | '\033[0;37m' |
| BBlack | '\033[1;30m' |
| BRed | '\033[1;31m' |
| BGreen | '\033[1;32m' |
| BYellow | '\033[1;33m'|
| BBlue | '\033[1;34m' |
| BPurple | '\033[1;35m'|
| BCyan | '\033[1;36m' |
| BWhite | '\033[1;37m' |
| UBlack | '\033[4;30m' |
| URed | '\033[4;31m' |
| UGreen | '\033[4;32m' |
| UYellow | '\033[4;33m'|
| UBlue | '\033[4;34m' |
| UPurple | '\033[4;35m'|
| UCyan | '\033[4;36m' |
| UWhite | '\033[4;37m' |
| On_Black | '\033[40m' |
| On_Red | '\033[41m' |
| On_Green | '\033[42m' |
| On_Yellow | '\033[43m'|
| On_Blue | '\033[44m' |
| On_Purple | '\033[45m'|
| On_Cyan | '\033[46m' |
| On_White | '\033[47m' |
| IBlack | '\033[0;90m' |
| IRed | '\033[0;91m' |
| IGreen | '\033[0;92m' |
| IYellow | '\033[0;93m'|
| IBlue | '\033[0;94m' |
| IPurple | '\033[0;95m'|
| ICyan | '\033[0;96m' |
| IWhite | '\033[0;97m' |
| BIBlack | '\033[1;90m'|
| BIRed | '\033[1;91m' |
| BIGreen | '\033[1;92m'|
| BIYellow | '\033[1;93m|
| BIBlue | '\033[1;94m' |
| BIPurple | '\033[1;95m|
| BICyan | '\033[1;96m' |
| BIWhite | '\033[1;97m'|
| On_IBlack | '\033[0;10|
| On_IRed | '\033[0;101m|
| On_IGreen | '\033[0;10|
| On_IYellow | '\033[0;1|
| On_IBlue | '\033[0;104|
| On_IPurple | '\033[0;1|
| On_ICyan | '\033[0;106|
| On_IWhite | '\033[0;10|
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### Two types of operators
#### Control operators
| name | value |
| ----------- | ------- |
| newline | (semicolon\|newline) command delimiter operator |
| \| | shell data processing - Pipe (command to command redirection) |
| & | Bash - ampresand (&) - (Asynchronous\|Parallel) control operator |
| && | Shell - && - AND boolean operator |
| \|\| | Shell - \|\| - OR boolean operator |
| ; | Shell - (semicolon\|newline) command delimiter operator |
| ( | Block definition |
| ) | Block definition |