Hi Dinesh!
here are the relevant lines
deb http://in.archive.ubuntu.com/ubuntu/ dapper main restricted deb-src http://in.archive.ubuntu.com/ubuntu/ dapper main restricted deb http://in.archive.ubuntu.com/ubuntu/ dapper-updates main restricted deb-src http://in.archive.ubuntu.com/ubuntu/ dapper-updates main restricted deb http://security.ubuntu.com/ubuntu dapper-security main restricted deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted
Indeed, you need to enable universe. If you want some more ``interesting" stuff enable multiverse as well. Just add the following :
deb http://archive.ubuntu.com/ubuntu dapper universe deb-src http://archive.ubuntu.com/ubuntu dapper universe deb http://security.ubuntu.com/ubuntu dapper-security main restricted deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted deb http://security.ubuntu.com/ubuntu dapper-security universe deb-src http://security.ubuntu.com/ubuntu dapper-security universe deb http://archive.ubuntu.com/ubuntu dapper multiverse deb-src http://archive.ubuntu.com/ubuntu dapper multiverse deb http://archive.ubuntu.com/ubuntu dapper-backports main restricted universe multiverse
Cheers,
- vihan