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renaming part of a file

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# 1  
Old 04-23-2006
renaming part of a file
I have file like this


xxxx_yyyy.sh
tttt_yyyy.sh
aaaa_yyyy.sh

how can I do that ?

please help me

thanks
# 2  
Old 04-23-2006
Sorry I missed what I wanted to do
I Like to rename as

leave the portion before the _ and only change after _

like aaaa_zzzz.sh
tttt_zzzz.sh

etc

thanks
# 3  
Old 04-23-2006
Code:
$ ls *.sh
aaaa_yyyy.sh  tttt_yyyy.sh  xxxx_yyyy.sh
$ echo $0
/bin/bash
$ for file in *.sh; do mv ${file} ${file%%_*}_zzzz.sh; done
$ ls *.sh
aaaa_zzzz.sh  tttt_zzzz.sh  xxxx_zzzz.sh

or...
Code:
$ ls *.sh
aaaa_yyyy.sh  tttt_yyyy.sh  xxxx_yyyy.sh
$ for file in *.sh; do mv ${file} `echo ${file} | sed 's/\([^_]*_\)[^.]*\(\.sh\)/\1zzzz\2/'`; done
$ ls *.sh
aaaa_zzzz.sh  tttt_zzzz.sh  xxxx_zzzz.sh

Many ways to do this....

Cheers
ZB
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