System Administration

Today I learned how to use lsof to scan processes running in specific paths and discovered that the kill command accepts verbose, readable signal names for safer process management.

Today I learned about sophisticated Linux system administration techniques, monitoring utilities, and command-line tools that enhance productivity and system observability.

Today I learned about Python's raise from clause for exception chaining, customizing the Grub bootloader, the Liquorix kernel for desktop performance, and comprehensive hardware benchmarking with Phoronix Test Suite.

Linux System Administration Linux Kernel 5.8 Features Linux Kernel 5.8 has a lot of hardware level optimizations Significant improvements in hardware support and performance Better power management and efficiency Enhanced driver support for newer hardware Performance improvements across various subsystems Multi-Kernel Installation and Management You can install more than one kernel into a Linux installation and choose which to boot from in Grub Enables testing newer kernels while keeping stable fallback options Useful for development, testing, and troubleshooting Grub bootloader provides menu for kernel selection at boot time Benefits of Multi-Kernel Setup System Stability Ability to rollback to previous kernel if new version causes issues Critical for production systems and development environments Reduces risk when updating system components Development and Testing Test new kernel features without losing stable system Compare performance between kernel versions Debug kernel-specific issues by switching between versions Recovery Options Broken kernel update doesn’t render system unbootable Always have working kernel available for system recovery Essential for maintaining system uptime and reliability