Provide information (frequently refreshed) about the most CPU-intensive
processes currently running. See ps for explanations of
the field descriptors.
SYNTAX top options OPTIONS -b Run in batch mode; don't accept command-line input. Useful for sending output to another command or to a file. -c Show command line in display instead of just command name. -d delay Specify delay between refreshes. -i Suppress display of idle and zombie processes. -n num Update display num times, then exit. -p pid Monitor only processes with the specified process ID. -q Refresh without any delay. If user is privileged, run with highest priority. -s Secure mode. Disable some (dangerous) interactive commands. -S Cumulative mode. Print total CPU time of each process, including dead child processes. Interactive commands space Update display immediately. A Sort by age, with newest first. c Toggle display of command name or full command line. f, F Add fields to display or remove fields from the display. h, ? Display help about commands and the status of secure and cumulative modes. k Prompt for process ID to kill and signal to send (default is 15) to kill it. i Toggle suppression of idle and zombie processes. l Toggle display of load average and uptime information. ^L Redraw screen. m Toggle display of memory information. M Sort tasks by resident memory usage. n, # Prompt for number of processes to show. If 0 is entered, show as many as will fit on the screen (default). N Sort numerically by process ID. o, O Change order of displayed fields. P Sort tasks by CPU usage (default). q Exit. r Apply renice to a process. Prompt for PID and renice value. Suppressed in secure mode. s Change delay between refreshes. Prompt for new delay time, which should be in seconds. (Suppressed in secure mode.) S Toggle cumulative mode. (See the -S option.) t Toggle display of processes and CPU states information. T Sort tasks by time/cumulative time. W Write current setup to ~/.toprc. This is the recommended way to write a top configuration file. Example top -Ps5 Display processes sorted by CPU useage, updating every 5 seconds
"Venice is like eating an entire box of chocolate liqueurs at one go" - Truman Capote
kill - Stop a process from running
signal(3) - software signal facilities