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Numeric zero padding file rename

Terminal - Numeric zero padding file rename
ls *.jpg | awk -F'.' '{ printf "%s %04d.%s\n", $0, $1, $2; }' | xargs -n2 mv
2011-05-01 13:32:58
User: hute37
Functions: awk ls printf xargs
Numeric zero padding file rename

rename file name with fixed length nomeric format pattern


There are 2 alternatives - vote for the best!

Terminal - Alternatives
rename 's/\d+/sprintf("%04d",$&)/e' *.jpg
2011-05-01 20:50:36
User: eightmillion
Functions: rename

This uses Perl's rename utility (you may have to call it as prename on your box) and won't choke on spaces or other characters in filenames. It will also zero pad a number even in filenames like "vacation-4.jpg".

for i in $(seq -w 0 100) ; do mv prefix$(( 10#$i )).jpg prefix${i}.jpg ; done

Know a better way?

If you can do better, submit your command here.

What others think

Using 'ls' output for manipulating your data is WRONG and dangerous.

See this


Comment by RanyAlbeg 231 weeks and 2 days ago

using xargs without cleansing the input is also wrong. Look what happens when you try this test data

cd $(mktemp -d); touch "alpha.jpg" "beta beta.jpg"

Run the above command, and you get "mv: no such file 'beta' "

Comment by Mozai 231 weeks and 1 day ago

Your point of view

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