I have a script that changes all file extensions from .jpg to .JPG. I have written the script to go from .JPG to .jpg as well. What I need help with is. How would I edit the script to do either convert them from .jpg to .JPG or .JPG to .jpg


My current script is:


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#!/bin/bash
# I just run the script and make sure I put a # at the start of the line I don't # need.


for i in *.jpg; do j=`basename "$i" .jpg`; mv -v "$i" "$j.JPG"; done

for i in *.JPG; do j=`basename "$i" .JPG`; mv -v "$i" "$j.jpg"; done

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How would I make it check for jpg and change it to JPG, if there are no jpg, then it needs to check for JPG and then convert them to jpg.

Thanks

Use If statements.

The following will try to rename JPG in all filenames ending in JPG to jpg. If there are no JPG files, it will try to rename jpg in all filenames ending in jpg to JPG:
It's not perfect, but it's quick - hope it helps...

Hmm i get this error:

rename JPG jpg *JPG || rename jpg JPG *jpg
Bareword "JPG" not allowed while "strict subs" in use at (eval 1) line 1.
Bareword "jpg" not allowed while "strict subs" in use at (eval 1) line 1.


Its cool. I just created 2 seperate scripts, one to make it lower case to upper, one to make it upper to lower. Thanks.


Oh and ^^, no shit. I tried if statements, couldn't figure out how to write it. Hence the post.

I'm glad you've got a working solution. Just out of curiousity though - did you try the rename command wrapped in a perl script? I've never seen that error in a regular bash script before (and it works in my bash script).

Looks like he changed langs in midflow ;-)

Yeah - I did wonder the same thing

Steve,

I just ran the rename command you posted in a command line as root, just to see what would happen. I may play with it later in a bash script. It works fine now with me just having 2 seperate scripts. One makes the .jpg to .JPG the other makes .JPG to .jpg.



oh and what's this supposed to mean??


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Looks like he changed langs in midflow ;-)
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We both thought that you started in bash and then switched to perl - the only place I've seen the error about barewords is in perl.

ahhh I thought he meant I changed languages, as in english to something else... Anyways.. I bet if you run that rename command from the commandline you'll see the bareword error

Umm, no I don't. On my PC it works fine - no errors and it does the rename both ways. It's odd that you're getting that error. The reason I thought you were using perl is that if you look at man perldiag you can see that same error message.

Regardless - I'm glad you have it working