LinuxQuestions.org - Rename problems....

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- - Rename problems.... (https://www.linuxquestions.org/questions/linux-newbie-8/rename-problems-565570/)

karnaf

06-30-2007 05:27 AM

Rename problems....

Searched many of the threads here trying to figure out how to use rename function, also checked the man and info pages, to no avail.

I've got a folder with plenty of mp3 tracks. The problem is many of them have multiple spaces in the name and the extension is in CAPS. So I thought I'd start little by replacing all extensions to lower case.

Following the rename example from the man pages, I tried this, but it didn't work

Code:

rename .MP3 .mp3 *.MP3

Searching a little the web, I've encountered the following format, which didn't work either

Code:

rename 's/\.MP3/\.mp3/g' *.MP3

I've checked my syntax using sed which echoed the right results, but of course, did not rename the files

Code:

ls -R | sed 's/\.MP3/\.mp3/g'

What am I missing?

Thanks,
karnaf

p.s. Running openSUSE 10.2 -> bash 3.1.17(1)

titopoquito

06-30-2007 05:58 AM

Your example works without a problem here, with or without spaces in the file names. Bash 3.2.15(2) on Slackware, rename from util-linux 2.12r.

SciYro

06-30-2007 05:59 AM

The problem: there are two seperate rename commands, one from perl, another more basic. The first example is the more basic rename command from util-linux i think, the second is for the perl version. So, the first question, what rename command do you have installed (as they are not compatible)?

Also, what do you mean by it dident work? Any error messages to show? And i assume are you already in the same directory as the files you want renamed.

karnaf

06-30-2007 06:21 AM

Using rename from util-linux-2.12r, so I guess we're dealing with the basic one.

Didn't work == no error msgs, just acting as if it has worked but no file changes made. Of course I'm in the directory and have permission to rename files there.

I've tried the more complex bash script

Code:

for OLD_FILE in *.MP3

do

  NEW_FILE=$(echo $OLD_FILE | tr '[:upper:]' '[:lower:]' | tr '[ ]+' '.')

  mv $OLD_FILE $NEW_FILE

done

Which throws errors for each file saying that $NEW_FILE is not a directory (???)

Cheers!
karnaf

titopoquito

06-30-2007 06:34 AM

I don't know why it won't work for you, but another solution:

for file in *.MP3; do mv ${file} ${file//.MP3/.mp3}; done

karnaf

06-30-2007 07:06 AM

Code:

for file in *.MP3; do mv ${file} ${file//.MP3/.mp3}; done

Not working either, but it looks like the original file name has character which mess up the scripts (such as spaces and brackets)

I ended up editing my above script to do the job

Code:

for OLD_FILE in *.MP3

do

  NEW_FILE=$(echo $OLD_FILE | tr '[:upper:]' '[:lower:]' | tr '[ ]+' '.' | sed 's/(\(.*\))//g' | sed 's/[\.]\{1,\}/./g')

  mv "$OLD_FILE" "$NEW_FILE"

done

But I am still curious how come the simple 'rename' thing could not work...

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