AC(8) | System Manager's Manual | AC(8) |
ac
—
ac |
[-d | -p ]
[-t tty]
[-w file]
[users ...] |
ac
examines these records and writes the accumulated
connect time for all logins to the standard output.
Options available:
-d
-p
-t
tty!
’ to
indicate not this tty and end with
‘*
’ to indicate all similarly named
ttys. Multiple -t
flags may be specified.-w
fileIf no arguments are given, ac
displays the
total amount of login time for all active accounts on the system.
The default wtmp file is an infinitely increasing file unless frequently truncated. This is normally done by the daily daemon scripts scheduled by cron(8), which rename and rotate the wtmp files before truncating them (and keep about a week's worth on hand). No login times are collected, however, if the file does not exist.
For example,
ac -p -t "ttyd*" > modems ac -p -t "!ttyd*" > other
allows times recorded in modems to be charged out at a different rate than other.
ac
utility exits 0 on success,
and >0 if an error occurs.
ac
command appeared in
Version 6 AT&T UNIX. This version of
ac
was written for NetBSD 1.0
from the specification provided by various systems' manual pages.
April 19, 1994 | NetBSD 9.4 |