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convert filenames in current directory to lowercase

Terminal - convert filenames in current directory to lowercase
rename 'y/A-Z/a-z/' *
2009-10-11 11:36:07
User: Karakh
Functions: rename
20
convert filenames in current directory to lowercase

The simplest way I know.

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
rename 'y/A-Z/a-z/' *
find . -type f|while read f; do mv $f `echo $f |tr '[:upper:]' '[ :lower:]'`; done
2009-02-17 09:44:38
User: berta
Functions: find mv read
9

or, to process a single directory:

for f in *; do mv $f `echo $f |tr '[:upper:]' '[:lower:]'`; done
for i in *; do mv "$i" "$(echo $i|tr A-Z a-z)"; done
2009-02-18 21:29:28
User: mulad
Functions: mv
5

This will convert filenames from uppercase to lowercase. I find this useful after downloading images from my digital camera. This works for English, but other languages may need something slightly more complex like this:

for i in *; do mv "$i" "$(echo $i|tr [:upper:] [:lower:])"; done

Also, the quote marks aren't necessary if your filenames don't contain spaces.

find my_root_dir -depth -exec rename 's/(.*)\/([^\/]*)/$1\/\L$2/' {} \;
find . -depth -print -execdir rename -f 'y/A-Z/a-z/' '{}' \;
2011-03-25 03:10:27
User: rsimpson
Functions: find rename
Tags: bash find mv rename tr
1

easier way to recursively change files to lowercase using rename instead

Know a better way?

If you can do better, submit your command here.

What others think

I had taken note of this command, this was useful to convert the file names of my camera I do not know why that makes the extension of the file type in uppercase. Yesterday I re showing it to a person who boasted Windows 7. I asked him if he were able to rename to less than 1 minute all the files in a folder. Of course opened explorer and did not even had time to change the name of the first file (by hand) that this command had already finished. So I will sign a +1 to Karakh

Comment by 0disse0 163 weeks and 6 days ago

Curiously, this does not work for me at all (on SLES 11 SP1, using bash 3.2.51, rename version string: "rename (util-linux-ng 2.16)"). The man page shows a differing syntax, too. Which version of rename are you using?

Comment by baerbl 143 weeks and 4 days ago

Your point of view

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