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Just annotations of little "how to's", so I know I can find how to do something I've already done when I need to do it again, in case I don't remember anymore, which is not unlikely. Hopefully they can be useful to others, but I can't guarantee that it will work, or that it won't even make things worse.
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Auxiliary script to rename multiple files adding a zero-padding to them

Posted 08-19-2014 at 12:37 AM by the dsc

From this blog:

num=`expr match "$1" '[^0-9]*\([0-9]\+\).*'`
paddednum=`printf "%03d" $num`
echo ${1/$num/$paddednum}
Usage example:

for i in *.png;do mv $i `./ $i`; done

Possibly there's some syntax to do just that only with the "rename" command, though.
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