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- basics
- ll script usually resides inside a file. The file can be executable, but you can call a Bash script with that filename as a parameter: <code> bash ./myfile ... but by **permissions** (filemode). The file name can be any combination of legal filename characters. ... must be **the first two bytes** in the file! You can follow the process by using ''echo'' as a fake in
- behaviours
- at `cd' will fail if no valid directory name can be constructed from any of the entries in `$... the `echo' builtin to be fully conformant. Bash can be configured to be POSIX-conformant by default, ... t breaks in POSIX(r) mode! __**The POSIX(r) mode can be switched on by:**__ * Bash starting as ''sh'... e following restrictions: * the ''cd'' command can't be used to change directories * the variables
- scripting
- Avoid them if possible. They only make trouble. I can imagine one case where they're useful: Indenting ... you use for the first time are **empty**, anybody can **inject** content into a variable by passing it ... need to parse a parameter as a list of words, you can't quote, of course, e.g. <code> list="one two thr... oid it, unless absolutely neccesary: * ''eval'' can be your neckshot * there are most likely other
- obselete
- context, depending on the value of the variable, can yield different results depending on possibly unc... es of files in the current working directory. You can't get globbing without word-splitting, or vice ve... ). [[http://mywiki.wooledge.org/BashFAQ/050 | You can't store a command or character-delimited list in ... is makes some sense, because future compatibility can't be guaranteed, and any compatibility at all, re
- color
- (888 rgb) color. This means that current support can only display 256 different colors in the terminal while "true color" means that you can display 16 million different colors at the same t... ort when it is actually supported. App developers can freely choose to check for this same variable, or... e reliable method in an interactive program which can read terminal responses, and one that is transpar
- truecolor
- (888 rgb) color. This means that current support can only display 256 different colors in the terminal while "true color" means that you can display 16 million different colors at the same t... ort when it is actually supported. App developers can freely choose to check for this same variable, or... e reliable method in an interactive program which can read terminal responses, and one that is transpar