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Top Forums UNIX for Dummies Questions & Answers Renaming files in one file from names in other Post 302504092 by pawannoel on Sunday 13th of March 2011 03:02:46 PM
Old 03-13-2011
Hi there,

I tried your code but its giving me the following output:

Code:
:~ noel$ paste b.txt a.txt | while read a b
> do
> t=${b##*_}
> v=$(echo $b | sed 's/.*_//;s/-/+/')
> n=${b%$t}$(( ($v) / 2 )).${a#*.}
> mv "$a $n"
> done 
usage: mv [-f | -i | -n] [-v] source target
       mv [-f | -i | -n] [-v] source ... directory
usage: mv [-f | -i | -n] [-v] source target
       mv [-f | -i | -n] [-v] source ... directory
usage: mv [-f | -i | -n] [-v] source target
       mv [-f | -i | -n] [-v] source ... directory
-bash: () / 2 : syntax error: operand expected (error token is ") / 2 ")

but when I remove the "" in the mv command I get

Code:
> mv $a $n> done
mv: rename U_P_321_9_3_11.ab1 to K2_34650.ab1: No such file or directory
mv: rename U_P_322_9_3_11.ab1 to K7_988973.ab1: No such file or directory
mv: rename U_P_323_9_3_11.ab1 to K12_4253992.ab1: No such file or directory
-bash: () / 2 : syntax error: operand expected (error token is ") / 2 ")

Is this because a.txt and b.txt in this case are files containing entries and not real .ab1 files ??

I will do this will real files soons and let you know but if you can comment on the code to simplfy what its doing its will be a big help. At the moment I dont understand it

Thanks and have a nice evening. Smilie
 

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