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- behaviours
- ====== Bash's behaviour ====== {{keywords>bash shell scripting startup files dotfiles modes POSIX}} FIXME incomplete ===== Bash startup modes ===== ==== Login shell ==== As a "login shell", Bash reads and sets (executes) the user's profile from
- basics
- The basics of shell scripting ====== {{keywords>bash shell scripting basics learning tutorial}} =====... e. The file can be executable, but you can call a Bash script with that filename as a parameter: <code> bash ./myfile </code> There is **no need to add a boring filename extension** like ''.bash'' or ''.sh''. That is a holdover from UNIX(r), wh
- obselete
- Obsolete and deprecated syntax ====== {{keywords>bash shell scripting obsolete deprecated outdated}} T... his first table lists syntax that is tolerated by Bash but has few if any legitimate uses. These feature... kward compatibility with obsolete shells, or were Bash-specific features considered failed experiments a... n. See: [[syntax:redirection | redirection]]<code bash> $ { bash; dash </dev/fd/0; } <<<'echo foo>/dev/n
- scripting
- fix (''MY_'' in the example below) <code> #!/bin/bash # the prefix 'MY_' MY_LOG_DIRECTORY=/var/adm/ f... on names. ''/bin/ls'' is a valid function name in Bash, but is not a good idea. ==== Command substitut... /sh'': The argument that "on Linux ''/bin/sh'' is Bash" **is a lie** (and technically irrelevant) The s... e script file is called directly: If you code for Bash, specify ''bash''! * it documents the desired i
- truecolor
- t true color: "888" colors (aka 16 milion) <code bash> printf "\x1b[${bg};2;${red};${green};${blue}m\n"... olor itself. This is a good test case: <code bash> printf "\x1b[38;2;255;100;0mTRUECOLOR\x1b[0m\n" ... then it indicates truecolor is supported. <code bash> $ (echo -e '\e[48:2:1:2:3m\eP$qm\e\\' ; xxd) ^[... rt truecolor we might see a response like <code bash> ^[P1$r40m^[\ 00000000: 1b50 3124 7234 306d 1b5c
- color
- true color: "888" colors (aka 16 milion)\\ <code bash> printf "\x1b[${bg};2;${red};${green};${blue}m\n"... e color itself. This is a good test case: <code bash> printf "\x1b[38;2;255;100;0mTRUECOLOR\x1b[0m\n" ... then it indicates truecolor is supported. <code bash> $ (echo -e '\e[48:2:1:2:3m\eP$qm\e\\' ; xxd) ^[... nal emulator for the 21st century.\\ - Windows 10 bash console, since [Windows Insiders build 14931](h