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Old 09-06-2009, 02:27 AM   #1
clstanton
LQ Newbie
 
Registered: May 2008
Posts: 27

Rep: Reputation: 0
Removing characters from file name


Good evening. I need to remove letters from filenames up to and including the "-":

example:

ne-swickdnv.txt
south-windsexto.txt
westcomp-hawk22.txt

there are a variable number of characters before the "-". The output should be:

swickdnv.txt
windsexto.txt
hawk22.txt

I have tried to use sed

for file in *.txt;
do
sed 's/*-//g' $file >tempfile
mv tempfile $file
done

of course this did not work or I would not be here. I have tried several variations with no luck. I am sure it is because I do not understand the correct use of the wildcard in the sed command but I cannot find anything on this. All examples I have found remove a set number of charaters or deal with spaces.

Thanks for the time.

Chris
 
Old 09-06-2009, 02:49 AM   #2
pielas
Member
 
Registered: Jan 2009
Location: Poland
Distribution: Arch Linux
Posts: 50

Rep: Reputation: 17
use cut:

for file in *.txt;
do
mv "$file" "`echo $file|cut -d "-" -f 2`";
done

EDIT:
If you have more than one "-" in file names try 2- instead of 2

Last edited by pielas; 09-06-2009 at 02:57 AM.
 
Old 09-06-2009, 03:01 AM   #3
colucix
LQ Guru
 
Registered: Sep 2003
Location: Bologna
Distribution: CentOS 6.5 OpenSuSE 12.3
Posts: 10,509

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An alternative is shell parameter substitution:
Code:
#!/bin/bash
for file in *.txt
do
  mv "$file" "${file##*-}"
done
 
Old 09-06-2009, 03:15 AM   #4
clstanton
LQ Newbie
 
Registered: May 2008
Posts: 27

Original Poster
Rep: Reputation: 0
Thank you both!
I tried both options and they both worked. I promise I will study these options of the mv command. I did not know they existed.

Chris
 
  


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