I have mulitiple files in a unix directory e.g.

FILE10001.txt
FILE10002.txt

I want the above two files to get renamed as by a single command. I tried with mv but it does not work

FILE20001.txt
FILE20002.txt

Paresh

renchar="2"
for file in `ls /directory`
do
prefix=`echo ${file} | cut -c1-4`
suffix=`echo ${file} | cut -c6-`
mv ${file} ${prefix}${renchar}${suffix}
done

It gives following error.

 
ls: 0653-341 The file /directory does not exist

try this

 
for i in FILE*; do mv $i ${i/FILE1/FILE2}; done

On giving the below given command

for i in FILE*; do mv $i ${i/FILE2/FILE1}; done

ksh: ${i/FILE1/FILE2}: 0403-011 The specified substitution is not valid for this command.

renchar="2"
for file in `ls`
do
prefix=`echo ${file} | cut -c1-3`
suffix=`echo ${file} | cut -c5-`
mv ${file} ${prefix}${suffix}
done

FILE20001.txt
FILE20002.txt
FILE20003.txt

Try:

for i in FILE1*; do 
  mv "$i" "FILE2${i#FILE1}"
done

Just prefect.....what i was looking for ....Thanks a lot...