14 Oct
2004
14 Oct
'04
8 p.m.
Hi Everyone,
I am working on a bash script, and currently looking at examples. I came across something I'm not sure what it means: if (( $? )); , the double quotes and the $? is what I don't get. In the script there is no variable set for ? so kinda lost.
Possible info: Simply enclose the particular arithmetic expression between a "$((" and a "))", and bash will evaluate the expression.
And also anyone have recommendation of a good bash scripting book.
Learning the bash Shell, 2nd Edition?
Thanks,
--
dj_goku
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