top is a real time processes and threads monitor which lists basic information about currently active processes.
top may be seen as
ps command which updates itself with a given rate. Execution of
top applet may be controlled with command-line arguments and further with interactive commands when being
top is run with
-h argument the help message is displayed as follows:
Command-line arguments -h: prints help -H: starts with threads mode -d: sets refresh rate (integer greater than 0) -n: sets number of iterations (by default its infinity) Interactive commands: <ENTER> or <SPACE>: refresh H: toggle threads mode q: quit P: sort by CPU M: sort by MEM T: sort by TIME N: sort by PID R: reverse sorting
is run it presents the user with a live monitor of processes sorted by %CPU usage. The monitor is structured in columns with headers. Each row represents a process.
Column headers are: - PID - process id - PPID - parent process id - PR - priority - STATE - state of process - %CPU - cpu usage of process - WAIT - wait for processor time - TIME - age of process - VMEM - memory used - CMD - command that started that process