sudo command

How do I install latest Firefox version 4.0 in Linux operating systems?

{ 9 comments }

How do list contents of directories in a structure like format under Linux operating systems?

{ 5 comments }

When I try to restart my BIND 9 server under Ubuntu Linux using service bind9 restart or service bind9 start command, I get the following error:
resolvconf: Error: /etc/resolv.conf must be a symlink

How do I fix this problem?

{ 4 comments }

How do I reload the partition table in Ubuntu Linux without rebooting the systems?

{ 9 comments }

This happens lot of times. I login as a normal user and start to edit httpd.conf or lighttpd.conf or named.conf in vim / vi text editor. However, I’m not able to save changes due to permission issue (all config files are owned by root). How do I save file without creating a temporary file (/tmp/httpd.conf) and then move the same (mv /tmp/httpd.conf /etc/httpd) as root using vim / vi itself?

{ 42 comments }

How do I start / stop / restart my postfix mail server under Linux or UNIX operating systems?

{ 6 comments }