topic Re: tr question in Operating System - Linux

tr question

Andrej Vavro — Fri, 08 Aug 2003 13:00:04 GMT

Hi,

I need to rename file from
/app/abd/12345.w55 to
/app/abd/12345.p55 in script.

echo ${file1} | tr 'w' 'p' is giving me
/ap/abd/12345.p55

It deletes one 'p'. It's in bash on SuSE SLES7.
I am talking about thousand files. Just change extension from w to p.

Thanks for your help in advance.
Andrej

Re: tr question

Andrej Vavro — Fri, 08 Aug 2003 13:02:06 GMT

Sorry, it's

tr -s 'w' 'p'

Re: tr question

Umapathy S — Fri, 08 Aug 2003 13:56:01 GMT

Andrej,
Your question itself contains the solution.

tr -s actually squeeze and repeats. Leave the -s option to get your requirement. Check man tr.

-s, --squeeze-repeats
replace each input sequence of a repeated character that is
listed in SET1 with a single occurrence of that character

HTH,
Umapathy

Re: tr question

Jean-Luc Oudart — Fri, 08 Aug 2003 15:53:56 GMT

assuming that's all the files are *.w*

for fln in `ls *.w??`
> do
> newfln=`echo $fln | sed -e 's/\.w/\.p/'`
> mv $fln $newfln
> done

Rgds,
JL

Re: tr question

Sergejs Svitnevs — Fri, 08 Aug 2003 16:03:37 GMT

change script to use "sed" instead of "tr":

echo ${file1} | |sed 's/\.w/\.p/'

Regards,
Sergejs

Re: tr question

Stuart Browne — Sun, 10 Aug 2003 23:09:54 GMT

Or you could just use bash buildins..

for FILE in /path/to/*.w??
do
mv $FILE ${FILE//\.w/\.p}
done

go bash ;) Much fun.