Shell Programming and Scripting

Hello mates,

I am quite new to script programming and I am facing an uphill task to rename files in one folder. I have gone through similar posts but most of them deal with renaming files by changing the file extensions.
Problem : I have a folder which contains files like bild01.jpg,bild02.jpg....and so on..
There are more files in the folders which should remain untouched.
I want to rename these 'bild' files as follows:

Code:

bild01.jpg -----> 1c.jpg
bild02.jpg -----> 2c.jpg
.
.
bild30.jpg------>30c.jpg

I have reached till :

Code:

#!/bin/bash

for i in `ls -1 bild*`
do 
   filename=$i
   j=`echo $filename | sed 's/.*bild\(.\).*/\1/'`
   if [ $j -eq 0 ]
   then
      echo "Good Morning"
   elif [ $j -gt 0 ]
   then
      echo "Good Night"
   fi
done

The if statements here compare the 5th character in each file name.
Instead of 'Good Morning' and 'Good Night', I would like to have a working code which replaces characters 'bild0' or 'bild' with letter 'c'

Any help is appreciated...
Thanks in advance

CJ

Moderator's Comments:

Please use [code] and [/code] tags when posting code, data or logs etc. to preserve formatting and enhance readability, thanks.

Code:

#!/bin/bash

for i in bild*; do
     mv $i `echo $i| sed 's/^[a-zA-Z]\+0*/c/g'`
done

exit 0

or to avoid spawning an extra sed process

Code:

#!/bin/bash
for f in bild*jpg
do
     mv $f c${f#bild}
done

Thanks Zxxon !..
It worked like I wanted ...how the command would look like if I wanted
1c.JPG ,2c.JPG instead ?
Thanks again..

CJ

See if this works for you:

Code:

#!/bin/ksh
typeset -i mSeq
for mFName in bild*jpg
do
  mSeq=`echo $mFName | sed 's/.*\([0-9]\{2\}\).*/\1/'`
  mNewFName="${mSeq}c.jpg"
  mv ${mFName} ${mNewFName}
done

Guys..thanks for your replies...I got my code working after all your valuable inputs.

CJ