In this video, I explain advanced Linux commands used to analyze and fix critical problems with the Linux operating system. I explained what the dmesg command is for and below are other useful commands.
dmesg – kernel buffer
vmstat – virtual memory
pidstat – checks every PID status
mtr – checks network latency
mpstat — checks every CPU usage
iostat – checks the hard disk status
free – checks the storage status
ifconfig — checks network interfaces
sar — checks all system activity
ss — Checks connection performance
iftop – Check network performance
smem — Checks the memory allocated per process

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