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View Code? Open in Web Editor NEWA neoVIM plugin for alternating between embraced and unbrace posix shell variables
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Support for special variables in BASH
List of special shell variables in BASH
| Variables | Description |
|---|---|
$0 |
The process being executed |
$1-$9 |
The first nine command-line arguments |
$# |
The number of command-line arguments |
$* |
All command-line arguments as a single string |
$@ |
All command-line arguments as an array |
$? |
The exit status of the last executed command |
$! |
The process ID of the last background command |
$$ |
The process ID of the current shell |
$- |
The set of options used in the current bash shell |
If using embraced style then any ${[[:number:]]+} is valid, however for unbraced, only $[[:number:]] is valid
blog.knoldus.com/special-variables-in-bash-scripting
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