sajad torkamani
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Bash symbols
12 December 2025 (Updated 12 December 2025)
$@
: All arguments
$#
: Count of arguments
$?
: Exit code of last command
$$
: Process ID of current shell
$!
: Process ID of the last background process
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Bash symbols: $!
Bash symbols: $?
Bash symbols: $@
Bash symbols: $#
Bash symbols: $$