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Shell Programming and Scripting

Rename many files

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Top Forums Shell Programming and Scripting Rename many files
# 8  
Old 04-03-2009
if you have Python, you can use the script in my sig called file renamer. eg usage
Code:
# ls -1
01_anote1.pdf
01_bnote1.pdf
01_control1.pdf
01_invoice_21.pdf
20_quote_l1.pdf

# filerenamer.py -p "(\d)\.pdf" -e ".pdf" -l "*.pdf"
==>>>>  [ /home/images/20_quote_l1.pdf ]==>[ /home/images/20_quote_l.pdf ]
==>>>>  [ /home/images/01_invoice_21.pdf ]==>[ /home/images/01_invoice_2.pdf ]
==>>>>  [ /home/images/01_anote1.pdf ]==>[ /home/images/01_anote.pdf ]
==>>>>  [ /home/images/01_control1.pdf ]==>[ /home/images/01_control.pdf ]
==>>>>  [ /home/images/01_bnote1.pdf ]==>[ /home/images/01_bnote.pdf ]

# filerenamer.py -p "(\d)\.pdf" -e ".pdf"  "*.pdf"
/home/images/20_quote_l1.pdf  is renamed to  /home/images/20_quote_l.pdf
/home/images/01_invoice_21.pdf  is renamed to  /home/images/01_invoice_2.pdf
/home/images/01_anote1.pdf  is renamed to  /home/images/01_anote.pdf
/home/images/01_control1.pdf  is renamed to  /home/images/01_control.pdf
/home/images/01_bnote1.pdf  is renamed to  /home/images/01_bnote.pdf
# ls -1
01_anote.pdf
01_bnote.pdf
01_control.pdf
01_invoice_2.pdf
20_quote_l.pdf

remove -l to commit
# 9  
Old 04-03-2009
Quote:
Originally Posted by siquadri
Can someone please explain this command
Code:
sed 's/\(.*\)1\(\..*\)/mv & \1\2/' | sh

With sed you can save substrings with \(.*\) and recall them back with \1, \2, \3 etc.

Code:
\(.*\)1\(\..*\)

Here we saved the 1st portion \(.*\) before the 1 and the 2nd portion after the 1.

Code:
mv & \1\2

The string is substituted with mv & and the 2 portions. The & is a character with a special meaning and is replaced with the matched string.

Regards
# 10  
Old 04-30-2009
I wish I were better at sed and awk. Sometimes, doing this is easier and is more understandable if you have to look at the code again one day and your sed is shaky like mine:

Code:
ls *.pdf 2>/dev/null|while read file_nm ; do
   mv $file_nm ${file_nm%%1.*}.pdf
done
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