awk on multiples files Post: 302540701

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ac

AC(8)							    BSD System Manager's Manual 						     AC(8)

NAME

     ac -- display connect time accounting

SYNOPSIS

     ac [-d] [-p] [-w file] [users ...]

DESCRIPTION

     If the file /var/log/wtmp exists, a record of individual login and logout times are written to it by init(8) and login(8) respectively.  The
     program ac examines these records and writes the accumulated connect time for all logins to the standard output.

     Options available:

     -d      Display the connect times in 24 hour chunks.

     -p      Display individual user totals.

     -w file
	     Read raw connect time data from file instead of the default file /var/log/wtmp.

     users ...
	     Display totals for the given individuals only.

     If 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 sched-
     uled by cron(8) which rename and rotate the wtmp files before truncating them (and keeping about a weeks worth on hand).  No login times are
     collected however, if the file does not exist.

FILES

     /var/log/wtmp
     /var/log/wtmp.[0-7]  rotated files

SEE ALSO

     init(8), sa(8), login(1), utmp(5).

HISTORY

     A ac command appeared in Version 6 AT&T UNIX.

4th Berkeley Distribution					  April 19, 1994					 4th Berkeley Distribution