Some Computer Hints


UNIX System Commands

Use [] in grep to find a process and not include the grep command itself when you pipe ps -ef output to grep:

For example:

$ ps -ef | grep inet[d]

will normally display one line like this:

    root   938     1  0  Dec  6  ?         0:36 /usr/sbin/inetd

but, just:

$ ps -ef | grep inetd

will generally display the grep process also:

    root   938     1  0  Dec  6  ?         0:36 /usr/sbin/inetd
    root  5494  5398  0 18:45:05 pts/5     0:00 grep inetd

See also the pidof command:

$ pidof sshd
22953 22838 862