ABOUT unalias Remove each name from the list of defined aliases. If -a is supplied, all alias definitions are removed. The return value is true unless a supplied name is not a defined alias. [bash] $unalias unalias: usage: unalias [-a] name [name …] $echo $? 2 $unalias -a $echo $? 0 $unalias pwd bash: unalias: …
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