How can I batch rename files to lowercase in Subversion?

Question

We are running subversion on a Linux server. Someone in our organization overwrote about 3k files with mixed case when they need to all be lowercase.

This works in the CLI

rename 'y/A-Z/a-z/' *

But obviously will screw up subversion.

svn rename 'y/A-Z/a-z/' * 

Doesn't work because subversion deals with renames differently I guess. So How can I do this as a batch job? I suck with CLI, so please explain it like I'm your parents. hand renaming all 3k files is not a task I wish to undertake.

Thanks

Answer 1

for src in *; do
    dst=$(echo "$src" | tr '[A-Z]' '[a-z]')
    [ "$src" = "$dst ] || svn rename "$src" "$dst"
done

How it works:

1. Loop over source filenames.
2. Destination filename is lowercased source filename. tr does character by character translations.
3. If source and destination filenames are the same we're okay, otherwise, svn rename. You could use an if statement instead, but for one-liner conditionals using || is pretty common.

If you need recursion, you can create a little script svn-lowername.sh (a slight variant of the above):

#!/bin/bash
for src; do
    dst=$(echo "$src" | tr '[A-Z]' '[a-z]')
    [ "$src" = "$dst" ] || svn rename "$src" "$dst"
done

Make sure to chmod +x svn-lowername.sh. Then execute:

find -name .svn -prune -o -type f -print0 | xargs -0 ./svn-lowername.sh

If you think this problem might happen again, stash svn-lowername.sh in your path somewhere (~/bin/ might be a good spot) and you can then lose the ./ prefix when running it.

You can also use svn-lowername.sh on just a single dir like this:

./svn-lowername.sh *