ac(8) System Manager's Manual ac(8)Name
ac - login accounting
/etc/ac [ -w wtmp ] [ -p ] [ -d ] [ people ] ...
The command produces a printout giving connect time for each user who has logged in during the life of the current wtmp file. A total is
The accounting file is maintained by and Neither of these programs creates the file, so if it does not exist no connect-time accounting is
done. To start accounting, it should be created with length 0. On the other hand if the file is left undisturbed it will grow without
bound, so periodically any information desired should be collected and the file truncated.
Options-w Specifies an alternate wtmp file.
-p Prints individual totals; without this option, only totals are printed.
-d Causes a printout for each midnight to midnight period. Any people will limit the printout to only the specified login names. If
no wtmp file is given, is used.
FilesSee Alsolast(1), lastcomm(1), login(1), utmp(5), init(8), sa(8)ac(8)
Check Out this Related Man Page
AC(8) BSD System Manager's Manual AC(8)NAME
ac -- connect time accounting
ac [-dp] [-t tty] [-w wtmp] [users ...]
If the file /var/log/utx.log exists, a record of individual login and logout times are written to it by login(1) and init(8), respectively.
The ac utility examines these records and writes the accumulated connect time (in hours) 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/utx.log.
users ... 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 utx.log.
The default utx.log file will increase without bound unless it is truncated. It is normally truncated by the daily scripts run by cron(8),
which rename and rotate the utx.log files, keeping a week's worth of data on hand. No login or connect time accounting is performed if
/var/log/utx.log does not exist.
/var/log/utx.log connect time accounting file
The ac utility exits 0 on success, and >0 if an error occurs.
Allow times recorded in modems to be charged out at a different rate than other:
ac -p -t "ttyd*" > modems
ac -p -t "!ttyd*" > other
SEE ALSO login(1), getutxent(3), init(8), sa(8)BSD January 21, 2010 BSD
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