Unix Tip: CHANGE THE SUFFIX

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 3263 - January 15, 2016

http://www.ugu.com/sui/ugu/show?tip.today

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CHANGE THE SUFFIX

If you want to change the suffix of
multiple files, you can't do:

% mv *.abc *.def

However the following shell script
can be used to do the required
opperation:

***

Change all *.abc file to *.def the
following shell script would work:

#!/bin/sh
for f in *.abc; do
mv $f `basename $f .abc`.def
done

How it works:

for f in *.abc; do

Set up a look for all files ending
in .abc, and each time around setup
$f as the filename

mv $f `basename $f.abc`.def

`basename $f .abc` takes the filename
in $f and removes any trailing occurences
of .abc, we then append .def to the result
and the resulting command becomes
"mv file.abc file.def"

done

Ends the "for" loop above.

Under "csh" or "tcsh" a similar thing could be done with:

foreach f in ( *.abc )
mv $f `basename $f .abc`.def
end



This tip generously supported by: pwain@liberate.com



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