`top`
`htop`
`mpstat`
`vmstat 1`
`sar -u 1`
`pidstat 1`
`ps -eo pid,ppid,cmd,%cpu –sort=-%cpu | head`
`watch -n 1 “ps -eo pid,ppid,cmd,%cpu –sort=-%cpu | head”`
`cat /proc/stat`
`grep ‘cpu ‘ /proc/stat`
`nmon`
`glances`
`atop`
`uptime`
`free -h`
`iostat -c 1`