Thanks Koneark,

but i have one more prob here.
when i run
echo "today--RSS_URL=http://someurl" | sed 's/\(.*\)--\(.*\)=\(.*\)/x1=\1\nx2=\2\nx3=\3/'

it is giving the out as below.

x1=todaynx2=RSS_URLnx3=http://someurl



But I need the out put as

x1=today
x2=RSS_URL
x3=http://someurl

and i need to export these x1, x2 and x3 to the shell.

Thanks,
Eswar