| AC(8) |
AerieBSD 1.0 Refernce Manual |
AC(8) |
NAME
ac —
connect time accounting
SYNOPSIS
ac
[-dp]
[-t tty]
[-w wtmp]
[user]...
DESCRIPTION
If the file
/var/log/wtmp
exists, a record of individual login and logout
times are written to it by
login(1)
and
init(8),
respectively.
ac
examines these records and writes the accumulated connect time
for all logins to the standard output.
The options are as follows:
- -d
-
Display the connect times in 24 hour chunks.
- -p
-
Print individual users' totals.
- -t tty
-
Only do accounting logins on certain ttys.
The
tty
specification can start with
"\&!"
to indicate not this
tty
and end with
"*"
to indicate all similarly named ttys.
Multiple
-t
flags may be specified.
- -w wtmp
-
Read connect time data from
wtmp
instead of the default file,
/var/log/wtmp.
- user...
-
Display totals for the given individuals only.
If no arguments are given,
ac
displays the total connect time for all
accounts with login sessions recorded in
wtmp(5).
The default
wtmp
file will increase without bound unless it is truncated.
It is normally truncated by
newsyslog(8),
which renames and rotates the
wtmp
files every week.
In order for
ac
to run in sync with the rotation of
wtmp,
newsyslog(8)
is configured to run
just after
ac
completes.
User accounting information can be mailed weekly
to the system administrator:
see
weekly(8)
for more information.
No login or connect time accounting is performed if
/var/log/wtmp
does not exist.
.Ex -std ac
FILES
- /var/log/wtmp
-
connect time accounting file
- /var/log/wtmp.[0-7]
-
rotated files
EXAMPLES
Allow times recorded in
modems
to be charged out at a different rate than
other:
$ ac -p -t "ttyd*" \*(Gt modems
$ ac -p -t "!ttyd*" \*(Gt other
SEE ALSO
login(1),
wtmp(5),
cron(8),
init(8),
newsyslog(8),
sa(8)
HISTORY
An
ac
command appeared in
Version 6 AT&T UNIX.
This version of
ac
was written for
NetBSD 0.9a
from the specification provided by various systems' manual pages.
| AerieBSD 1.0 Reference Manual |
August 26 2008 |
AC(8) |