df command – Shows the amount of disk space used and available on Linux file systems.
du command – Display the amount of disk space used by the specified files and for each subdirectory.
free command
top or htop command
vmstat command
dmidecode command
/proc/meminfo file
Linux commands show all running processes
Apart from ps command, you can also use the following commands to display info about processes on Linux operating systems:
top command : Display and update sorted information about Linux processes.
atop command : Advanced System & Process Monitor for Linux.
htop command : Interactive process viewer in Linux.
pgrep command : Look up or signal processes based on name and other attributes.
pstree command : Display a tree of processes.
