How to Send Live Messages to All Shell Users

In a previous post, we explained how to send a message of the day (MOTD) to all users whenever they log into your server’s shell. It is a perfect way to reach users when they log in, but it will not allow you to send new messages to users who are currently logged in. […]

What to Do About Extra Large Log Files

Picture this.  It is 3AM on a Sunday, and you are enjoying the comfort of your bed when you receive a text message telling you something is wrong with your server.  As you struggle to crawl to your laptop, SSH into the server, and start poking around, you notice one of your system log files […]

Using dmesg for Kernel Information

On a Linux dedicated server, the kernel is the single most important component of the operating system. It controls the OS’s interaction with hardware and handles all primary functions. If something is going wrong with your server at the OS level, the kernel is one place you should investigate.
The command dmesg is a […]