nogjam‭

I've recently gained some PAM (Pluggable Authentication Modules) knowledge. I had written a Reddit post plus reply and then thought the stuff I shared would fit well here. Do domain-specific how-t...

2 answers  ·  posted 2y ago by nogjam‭  ·  last activity 2y ago by Andreas‭

I came across this in a bash script: excludes+=("${2-}") What is the meaning of ${2-}?

1 answer  ·  posted 2y ago by nogjam‭  ·  last activity 2y ago by nogjam‭

The dash, -, is part of a Parameter Expansion syntax that tells Bash to check for existence of the preceding parameter, a.k.a. whether it is "set", substituting whatever follows if it isn't. For th...

posted 2y ago by nogjam‭  ·  edited 2y ago by nogjam‭