MAIL First run a quick test to make sure the “sendmail” application is installed and working correctly. Execute the following command, replacing “you@youremailid.com” with your e-mail address. # mail -s…

OpenSSH is a great means to protect your connection from being sniffed by others. However, this isn't always enough. Simply proving that you connected to a server is enough to…

Ever want to schedule a tweet to go out at the same time an article is published or an event is started? Want to do it without signing up to…

(from tuxopia.net) I was troubled by the fact that my server was constantly being bombarded with SSH probes for as long as 1 to 2 hours at a stretch. Although…

Virtual terminals are a good tool to have—they offer a last-ditch escape to command line for a chance to fix things in a crashing system. But many Linux systems come…

Debian and Ubuntu uses for visudo, crontab and other similar applications the default text editor, you want to change it use the update-alternatives command. It is as easy as, run…

Some times when you install a new deb package, the system will be broken. We may have to remove the package. For this , you can try the following. (…