sudo command

Both Debian and Ubuntu Linux provides a number of package management tools. This article summaries package management command along with it usage and examples for you.


FreeBSD comes with kldstat command. The kldstat utility or command displays the status of any files dynamically linked into the kernel. And the kldunload utility unloads a file which was previously loaded with lldload command. You can use kldunload command as follows. Unload a file from the kernel First login as a root user (use […]


Have you ever wondered why shutdown account exists on Linux server, especially under Red Hat Enterprise Linux distribution?

The answer is quite simple – shutdown account can shutdown server. Here is how you can enable the shutdown account: