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I want to rename a lot of files on Mac OS X (10.7.2).. I don't have the perl package for the rename command.

My files have names like "T452-102456-0.png" and I want to delete the "-0" part. I know I can do this action by writing my own php-cli script, but I would like to know of an easier and faster solution.

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Isn't there logical contradiction between “a lot of pdf files” and “My files have names like "T452-102456-0.png"”? – manatwork Nov 7 '11 at 12:26
Oh... the type of files doesn't matter, but it's true ^^. I edit, thank you for your comment =) – Raphaël Nov 7 '11 at 13:14
up vote 12 down vote accepted

Bash or Ksh together with mv could solve it:

for f in *.png; do mv -n "$f" "${f/-0}"; done

In case the file name may have “0” after the first dash too and the “-0” is always in front of the dot, you may want to include that dot too in the expression:

for f in *.png; do mv -n "$f" "${f/-0./.}"; done

But as that renaming rule is simple, if you have rename from the util-linux package, that will do it too:

rename '-0.' '.' *.png
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it works perfectly. Thank you very much =) – Raphaël Nov 7 '11 at 13:13

Simple method: Files in current directory only

With zsh:

autoload zmv
zmv '(*)-0(.png)' '$1$2'

With other shells:

for x in *-0.png; do mv -- "$x" "${x%-0.*}.png"; done

Enhanced method: Files in current directory and/or subdirectories

With zsh:

zmv '(**/)(*)-0(.png)' '$1$2$3'

With ksh93:

set -o globstar
for x in **/*-0.png; do mv -- "$x" "${x%-0.*}.png"; done

With bash ≥4, as above, but use shopt -s globstar instead of the set command.

With other shells:

find -name '*-0.png' -exec sh -c 'for x; do mv -- "$x" "${x%-0.*}.png"; done' _ {} +
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If you have the mmv package:

mmv '*-0.png' '#1.png'

Like (recent versions of) rename, this will take reasonable care to avoid overwriting existing files.

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