LinuxHow to Audit SELinux Denials in Linux using the ausearch Command
The Enforcer of Mandatory Access Control SELinux (Security-Enhanced Linux) is a mandatory access control (MAC)...
LinuxHow to Configure Linux CPU Affinity using the taskset Command
The Need for CPU Pinning In a standard Linux environment, the kernel’s completely fair scheduler...
LinuxHow to Lock Memory Pages in Linux using the mlock System Call
The Risk of Memory Swapping In a Linux environment, when the system runs low on...
LinuxHow to Lock a User Account in Linux using the passwd Command
The Immediate Security Threat In a corporate environment, employee terminations or security breaches happen rapidly....
LinuxHow to Secure Shared Memory (/dev/shm) in Linux to Prevent Exploits
The Danger of Shared Memory In a Linux environment, Inter-Process Communication (IPC) allows two different...
LinuxHow to Configure Linux Network Bonding via nmcli
The Need for Network Resilience If you are deploying a critical database server or a...
LinuxHow to View Process Threads in Linux using the ps -T Command
The Limitations of the ps Command When a Linux server experiences a massive CPU spike,...
LinuxHow to Manage Linux Swap Space using the swapon Command
The Purpose of Swap Space In a Linux environment, Swap space acts as a safety...
LinuxHow to Clear Systemd Journal Logs in Linux using journalctl
Controlling System Logs On modern Linux distributions utilizing systemd, virtually every system event, kernel error,...
LinuxHow to Check Inode Usage in Linux using the df -i Command
The Hidden Storage Limit A common nightmare scenario for Linux system administrators is receiving a...
LinuxHow to View the IP Routing Cache in Linux using the ip route show cache Command
The Hidden Routing Shortcut When a Linux server acts as a router (or simply sends...
LinuxHow to View Process Memory Usage in Linux using the pmap Command
Beyond the Top Command When a Linux server begins to run out of RAM, system...
LinuxHow to Manage Linux Kernel Modules using the modprobe Command
The Monolithic vs. Modular Kernel Unlike early operating systems where every single hardware driver had...
LinuxHow to Flush the Postfix Mail Queue in Linux using the postqueue Command
Managing the Mail Spool Postfix is one of the most widely used Mail Transfer Agents...
LinuxHow to Check the Filesystem Type (ext4, xfs, btrfs) in Linux using the df Command
Identifying the Filesystem Architecture Unlike Windows, which almost exclusively relies on the NTFS filesystem, a...
LinuxHow to Clear the Print Queue in Linux using the cancel Command
Managing the Print Spooler In a Linux environment, whether you are managing a desktop workstation...
LinuxHow to Disable Spotlight Indexing for a Specific Folder via Terminal
The Problem with Overzealous Indexing macOS relies on an incredibly powerful background indexing engine called...