mpstat
The mpstat command in a Linux system gives the CPU utilization report and the hardware and software interrupts per second for processors.
The iostat command for getting the CPU and input-output statistics for Linux and Unix systems is explained.
Installation and configuration steps for nginx HTTP server and associated packages, apc and PHP-FPM, are given.
vmstat prints information about system processes, memory, swap, I/O blocks, interrupts and context switches and the CPU activity.
The uptime and w commands in Linux help in finding about the system uptime, load average and information about the logged in users.
The free command can be used to find the free and used memory in a Linux system. The free command is explained with an example.
Load average is an indication of whether the CPU(s) is/are adequately available for the processes during the previous n minutes.
The top command is used for monitoring a UNIX-like system continuously for processes' usage of system resources like the CPU time and memory.
The ps command gives information about processes on a Linux or Unix system. ps command is explained with examples.
The man command output is useful in multiple ways. Steps for formatting the man command output for printing are listed.