Special Variables in Bash Shell [With Script Examples]

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Un petit rappel des variables spéciales de Bash.

Here's quick look into the special variables you get in bash shell:

Special Variable	Description
`$0`	Gets the name of the current script.
`$#`	Gets the number of arguments passed while executing the bash script.
`$*`	Gives you a string containing every command-line argument.
`$@`	It stores the list of every command-line argument as an array.
`$1-$9`	Stores the first 9 arguments.
`$?`	Gets the status of the last command or the most recently executed process.
`$!`	Shows the process ID of the last background command.
`$$`	Gets the process ID of the current shell.
`$-`	It will print the current set of options in your current shell.

bash · script · variable

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