Linux Shells by Example

ps—reports process status

ps [ - ] [ lujsvmaxScewhrnu ] [ txx ] [ 0[H-]k1[[+|-]k2…]

ps prints information about active processes. Without options, ps prints information about processes associated with the controlling terminal. The output contains only the process ID, terminal identifier, cumulative execution time, and the command name. Otherwise, the information that is displayed is controlled by the options. The ps options are not the same for ATT and Berkeley type versions of UNIX.

Example A.44.

1 % ps l FLAGS UID PID PPID PRI NI SIZE RSS WCHAN STA TTY TIME COMMAND 100 501 496 495 12 0 1412 820 sigsuspend S p0 0:00 -tcsh 100000 501 1165 496 13 0 952 492 R p0 0:00 ps l 100 501 506 505 0 0 1448 856 sigsuspend S p1 0:00 -tcsh 100000 501 ...