[SOLVED] Running a python script on multiple files

ManyouRisms · 05-26-2011, 12:45 PM

Hey guys. I'm trying to run a python script that was created to reencode mp3 files. When I run the script on one mp3I have no problem but I can't figure out why it's not outputting multiple files. Terminal acts like ts doing something but no files are being created in the folder I specify.
I'm running:

Code:

nice -20 python decrypter.py /var/mobile/Library/Downloads/Music/*.mp3 

/var/mobile/Library/Downloads/Music/Music $i $RANDOM.mp3

because I have about 200 mp3s in the folder, and the random is because the mp3s currently are named in numbers and I'll have to figure out the rest later, for now I just want them encoded.

Any ideas what is wrong with what I'm putting?

kbp · 05-26-2011, 10:13 PM

Try running it in a loop

Code:

for file in /var/mobile/Library/Downloads/Music/*.mp3
do
    python decrypter.py ... $file
done

You'll need to fix up the command obviously ...

archtoad6 · 05-27-2011, 07:27 AM

Is there something unique about the Python that is installed on the BSDs? Otherwise this should be in Programming.

ManyouRisms · 05-27-2011, 11:24 AM

@archtoad6. Nothing particularly special about the script but afaik the problem isn't with the script it's how I'm running it via command line,which is why I put it here. I understand if yo want to move it though, my apologies.

@kbp thanks a lot I'll give it a go now and post back.

Edit: Okay I've done

cd /var/mobile/Library/Downloads/Music/
for files in [ "${1##*.}" = "mp3" ]
do
** *nice -20 python /var/mobile/decrypter.py /var/mobile/Library/Downloads/Music/*.mp3 $file
done

What it does is take one file and reencode it but in place instead of a encoded copy. Not sure where else to go with this.

kbp · 05-27-2011, 10:14 PM

Your command is still wrong, I don't think you should be referencing multiple files (.../*.mp3)

rocket357 · 05-29-2011, 10:11 PM

Quote:

Originally Posted by kbp

Your command is still wrong, I don't think you should be referencing multiple files (.../*.mp3)

That's absolutely correct. Is the op using the Grooveshark decrypter as referenced here?

If so, you're using the utility wrong. You're giving it a list of files instead of <infile> and <outfile>.

A correct version (in theory...I didn't test it haha):

Code:

cd /var/mobile/Library/Downloads/Music/
[ -d ../decrypted/ ] || mkdir ../decrypted/
for file in [ "${1##*.}" = "mp3" ]
do
    nice -20 python /var/mobile/decrypter.py $file ../decrypted/$file
done

That will decrypt each file and place the decrypted file in /var/mobile/Library/Downloads/decrypted/

ManyouRisms · 05-30-2011, 10:57 AM

far out, this seems to be working a treat. i forgot by using ´for file in´ i was defining $file so i didnt need the *.mp3. thanks a lot guys, i´m just starting to have a bit of fun with this so hopefully i can make it through the rest of my ebooks.

cheers

jesse

archtoad6 · 06-01-2011, 04:49 AM

If that means it's solved, please mark it so.