Remove a space at the end of line

[chakilamshiva]

Hi ,
I want to read a file and pass the string to another job ,File has values like "000TV,000TX,000TZ,000WG," This is generated dynamically so there is no predefined length, Now what I want is to remove "comma" at the last position.
so output will be "000TV,000TX,000TZ,000WG"

I am a newbie, I tried to use SED,WC -m, etc but in vain.

please suggest me..

Thanks in Advance
shiva

[secondmouse]

with sed, you can do
sed 's/\(.*\),/\1/g' datafile

or you can:
cat datafile | while read line; do line=${line%,}; echo $line; done