I am trying to understand a script that was written a few years ago by someone that is no longer available here. The script references $? a few times. What is this?
P.S. Google couldn't help since it seems to strip the $? from the search term
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Baruch
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2Google perfectly help "dollar shell bash" ... – hivert Mar 09 '14 at 09:45
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See also http://stackoverflow.com/q/20272085/827263 – Keith Thompson Mar 09 '14 at 09:48
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You really should read the GNU bash manual. $? is a special parameter which
expands to the exit status of the most recently executed foreground pipeline.
Read also the advanced bash scripting guide.
Basile Starynkevitch
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