How does ${!#} work in bash to get the last command-line argument? – unix.stackexchange.com

How does ${!#} work in bash to get the last command-line argument? – unix.stackexchange.com

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From the Advanced Bash-Scripting Guide, to get the last command-line argument: Or: lastarg=${!#} This is an indirect reference to the $# variable. Note that lastarg=${!$#} doesn't work.

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