[SOLVED] Need to delete prefix from files

valkarin · 07-16-2010, 09:43 PM

I have a lot of mp3 files that have the track number as a prefix toi the file name.

Ex. 01_this_file.mp3

They are in ascending order and I would like to get rid of the track number sot that it reads:

this_file.mp3

There are about 200 files so I would like to find a way to rename them all at once if possible. Any suggestions?

allanf · 07-16-2010, 10:15 PM

NOTE: THIS IS FIXED BELOW as this was attempting to remove "digit_digit_digit_..." rather than "digitdigitdigit..._".

safe code before the real script

Code:

for f in $(ls [0-9][0-9]*); do echo mv "${f}" "${f##[0-9]_}"; done

The real code

Code:

for f in $(ls [0-9][0-9]*); do mv "${f}" "${f##[0-9]_}"; done

valkarin · 07-17-2010, 06:14 AM

Thanks for the reply. It didn't work. Got this error message:

mv: `01_this_file.mp3' and `01_this_file.mp3' are the same file. Any other ideas?

valkarin · 07-17-2010, 06:27 AM

Found a program that did it for me. Krename.

allanf · 07-18-2010, 02:54 PM

Quote:

Originally Posted by allanf

safe code before the real script

Code:

for f in $(ls [0-9][0-9]*); do echo mv "${f}" "${f##[0-9]_}"; done

The real code

Code:

for f in $(ls [0-9][0-9]*); do mv "${f}" "${f##[0-9]_}"; done

This should have been:

Code:

for f in $(ls [0-9][0-9]*); do echo mv "${f}" "${f#[0-9]*_}"; done

The real code

Code:

for f in $(ls [0-9][0-9]*); do mv "${f}" "${f#[0-9]*_}"; done

[/QUOTE]

The problem in the original is it attempted to remove digit_digit_... rather than digitdigit..._

Here is a sample test case to show it working:

Code:

bash$ for f in {0,1,2,3}{0,1,2,3,4,5,6,7,8,9}; do touch ${f}_this_file_${f}.mp3; done
bash$ lsc
00_this_file_00.mp3  08_this_file_08.mp3  16_this_file_16.mp3  24_this_file_24.mp3  32_this_file_32.mp3
01_this_file_01.mp3  09_this_file_09.mp3  17_this_file_17.mp3  25_this_file_25.mp3  33_this_file_33.mp3
02_this_file_02.mp3  10_this_file_10.mp3  18_this_file_18.mp3  26_this_file_26.mp3  34_this_file_34.mp3
03_this_file_03.mp3  11_this_file_11.mp3  19_this_file_19.mp3  27_this_file_27.mp3  35_this_file_35.mp3
04_this_file_04.mp3  12_this_file_12.mp3  20_this_file_20.mp3  28_this_file_28.mp3  36_this_file_36.mp3
05_this_file_05.mp3  13_this_file_13.mp3  21_this_file_21.mp3  29_this_file_29.mp3  37_this_file_37.mp3
06_this_file_06.mp3  14_this_file_14.mp3  22_this_file_22.mp3  30_this_file_30.mp3  38_this_file_38.mp3
07_this_file_07.mp3  15_this_file_15.mp3  23_this_file_23.mp3  31_this_file_31.mp3  39_this_file_39.mp3
bash$ for f in $(ls [0-9][0-9]*); do mv "${f}" "${f#[0-9]*_}"; done
bash$ lsc
this_file_00.mp3  this_file_07.mp3  this_file_14.mp3  this_file_21.mp3  this_file_28.mp3  this_file_35.mp3
this_file_01.mp3  this_file_08.mp3  this_file_15.mp3  this_file_22.mp3  this_file_29.mp3  this_file_36.mp3
this_file_02.mp3  this_file_09.mp3  this_file_16.mp3  this_file_23.mp3  this_file_30.mp3  this_file_37.mp3
this_file_03.mp3  this_file_10.mp3  this_file_17.mp3  this_file_24.mp3  this_file_31.mp3  this_file_38.mp3
this_file_04.mp3  this_file_11.mp3  this_file_18.mp3  this_file_25.mp3  this_file_32.mp3  this_file_39.mp3
this_file_05.mp3  this_file_12.mp3  this_file_19.mp3  this_file_26.mp3  this_file_33.mp3
this_file_06.mp3  this_file_13.mp3  this_file_20.mp3  this_file_27.mp3  this_file_34.mp3
bash$