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# 1  
Old 07-01-2010
Question Change multiple file names
Hello,

I have some files in a directory like:

Code:
01_07_2010_aa.txt
01_07_2010_bb.txt
01_07_2010_cc.txt
01_07_2010_dd.txt
01_07_2010_ee.txt
01_07_2010_ff.txt

I want to change their names to :

Code:
3nm_aa.txt
3nm_bb.txt
3nm_cc.txt
3nm_dd.txt
3nm_ee.txt
3nm_ff.txt

I know about 'rename' , but I don't want to change the file extension.
Any inputs??
# 2  
Old 07-01-2010
Code:
$ ls -1
01_07_2010_aa.txt
01_07_2010_bb.txt
01_07_2010_cc.txt
01_07_2010_dd.txt
01_07_2010_ee.txt
01_07_2010_ff.txt

$ ls * | sed "p; s/.*_/3nm_/g" | xargs -n2 mv

$ ls -1
3nm_aa.txt
3nm_bb.txt
3nm_cc.txt
3nm_dd.txt
3nm_ee.txt
3nm_ff.txt

# 3  
Old 07-01-2010
MySQL
Thank you very much.
# 4  
Old 07-01-2010
Code:
for i in $(ls); do mv $i "3nm${i:10:7}"; done

# 5  
Old 07-01-2010
Quote:
Originally Posted by fubaya
Code:
for i in $(ls); do mv $i "3nm${i:10:7}"; done

Never ever use plain ls to generate a file list. It's truly pointless. It is less efficient and less safe than a simple fileglob. Spread the good word Smilie

A tweaked version of your approach:
Code:
for i in *; do mv "$i" 3nm_"${i##*_}"; done

Regards,
Alister
# 6  
Old 07-02-2010
Question
Thank you all very much!!!

---------- Post updated at 03:31 PM ---------- Previous update was at 03:24 PM ----------

Just a follow-up question...

Is there a way to change my file names to the corresponding directory names?
My file structure is :

Code:
/abc/2010_06_07_aaa/Info.txt
/abc/2010_06_07_bbb/Info.txt
/abc/2010_06_07_ccc/Info.txt
/abc/2010_06_07_ddd/Info.txt
/abc/2010_06_07_eee/Info.txt

The output :
Code:
/abc/2010_06_07_aaa.txt
/abc/2010_06_07_bbb.txt
/abc/2010_06_07_ccc.txt
/abc/2010_06_07_ddd.txt
/abc/2010_06_07_eee.txt

Thanks!
# 7  
Old 07-02-2010
Off the top of my head, without testing:
Code:
for f in /abc/*/Info.txt; do mv "$f" "${f%/*}".txt; done

Regards,
Alister
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