Filtering ICMP Packets with Tcpdump
Tcpdump command in Linux can be used to capture ICMP packets. We will start with ICMP protocol introduction and then…
Why “Free Memory” on Linux Is the Wrong Number to Watch
Ask a Linux server “how much memory is free?” and the honest answer is “it’s complicated.” Modern Linux deliberately uses…
How Userdel Works In Linux
Userdel command can be used to delete a user and related files in Linux. In most Linux distributions, the user…
Linux tar Command: Create, Extract, and Search Archives
The tar command bundles multiple files and directories into a single archive. It’s similar to zip, with one key difference: zip files are always compressed,…
4 Useful Examples of Linux Passwd Command
Passwd is a basic Linux command to change the user password on Linux. A root user can change the password…
How tar works in Linux
The tar command in Linux is used to bundle up multiple files and/or directories. It’s similar to the zip command.…
3 Ways to find largest files in Linux
Running low on disk space? Knowing how to find the largest files on a Linux system is a handy trick…
How to Find the Process Using the Most CPU and Memory in Linux
When a Linux server slows down, the first question is almost always the same: what is eating the CPU or the…
Why CPU usage is over 100% For a Process on Linux
CPU utilization is a key metric to determine how much CPU uses for a process. Today we will review why…
Understanding CPU Run queue Length And Load Average in Linux
CPU run queue length and load average are key metrics related to system performance. We will review what these two…