btop is a modern resource monitor with a beautiful TUI interface. Installation, configuration, comparison with htop, and practical tips.

How to use the dmesg command to diagnose hardware, driver, and boot issues in Linux. Practical examples of filtering and analyzing kernel log messages.

How to use strace to trace system calls of processes in Linux. Attaching to running processes, filtering, and practical debugging examples.

A review of the 5 essential Linux performance monitoring tools: top, htop, vmstat, iostat, and ss. How to read CPU, memory, disk, and network metrics.