Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

ac(8) [bsd man page]

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

ac - login accounting SYNOPSIS
/usr/sbin/ac [ -w wtmp ] [ -p ] [ -d ] [ people ] ... DESCRIPTION
Ac produces a printout giving connect time for each user who has logged in during the life of the current wtmp file. A total is also pro- duced. -w is used to specify 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, /usr/adm/wtmp is used. The accounting file /usr/adm/wtmp is maintained by init and login. 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 undis- turbed it will grow without bound, so periodically any information desired should be collected and the file truncated. FILES
/usr/adm/wtmp SEE ALSO
init(8), sa(8), login(1), utmp(5). 4th Berkeley Distribution November 16, 1996 AC(8)

Check Out this Related Man Page

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

ac -- display connect time accounting SYNOPSIS
ac [-d | -p] [-t tty] [-w file] [users ...] 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. 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. -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 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 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. The ac utility exits 0 on success, and >0 if a fatal error occurs. FILES
/var/log/wtmp connect time accounting file /var/log/wtmp.[0-7] rotated files SEE ALSO
login(1), utmp(5), init(8), sa(8) HISTORY
An 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 sys- tems' manual pages. BSD
April 19, 1994 BSD
Man Page

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Need help with security

Hi there thanks for checking in. I run a helpdesk with about 500 users login onto a network and then onto a Unix box. Sometimes people use other people's login's.:-( All user's use there own PC.( I.P ) Is there a way that when somebody logs onto the unix box with a different I.P that the... (6 Replies)
Discussion started by: nemex
6 Replies

2. UNIX Desktop Questions & Answers


hi My name is Juan I dont can clear wtmp and similiar files how i do it? thanks (4 Replies)
Discussion started by: jtapia
4 Replies

3. UNIX for Advanced & Expert Users

.sh_history file

Hi Friends, We are currently 5 people using same Unix login-id on different terminals, .sh_history file contains list of commands typed by all 5 peoples(commands history) with the below list : $tail .sh_history ls -ltr pwd cd .. ls -ltr clear cd temp more kk.lst Now my question... (9 Replies)
Discussion started by: krishna
9 Replies

4. UNIX for Dummies Questions & Answers

Finding last time users logged in

I would like to find out the last time all users have logged in or out. I tried the last command, but it could not find the wtmp file in /var/adm (I searched in othe directories also). This is an AIX rs6000 4.2.1 system. We are moving our applications from this system to an AIX 5.2 system and I... (11 Replies)
Discussion started by: jyoung
11 Replies

5. Solaris

invalid login attempts...

I am wondering if solaris captures id's associated w/invalid login attempts? when I try to login as "test1" several (3-5) times, I do not find any userID info under "/var/adm" files: utmpx wtmpx messages lastlog Is there another location/log I should be checking? Is it necessary for... (6 Replies)
Discussion started by: mr_manny
6 Replies

6. AIX

crontab in AIX

Hi all, i am trying to reduce the file size of /var/adm/wtmp in my AIX servers and im using the method cp /dev/null /var/adm/wtmp to reduce it. I thought of automating it by including this command into crontab. Surprisingly, it doesn't work once i put into crontab, there is no error message thrown... (25 Replies)
Discussion started by: smallbook
25 Replies

7. AIX

wtmp file

Hello everyone I have a problem with the file wtmp that is on /var/adm This file was not on this directory (adm). I try creating a new file with the correct rights (644) and owner (adm:adm) but It doesnt work. If I type the last command i get this last ora10g ... (4 Replies)
Discussion started by: lo-lp-kl
4 Replies

8. UNIX for Dummies Questions & Answers

get all user's login time

hi all, i need yor help!!!:D i am a newbie in programming i want to get user list and their login time... i have search and learn about pswd and utmp, but i only can get usr list without their login time... do you have an idea to solve my problem? thanx (5 Replies)
Discussion started by: alif
5 Replies

9. Programming

Unix Shell background processing

So I made my own unix shell, but i want to make a background process when using the & appended to the end, so far most of the commands seem to work (except cd, but thats another story) right now here is what I have got. Im thinking maybe I shouldn't be using switch and maybe switch it to... (27 Replies)
Discussion started by: Mercfh
27 Replies

10. SCO

SLD: Failed to start the PMD Connection thread. (PM_THREAD_FAILED_TO_START).

Hello, I have a client with an 18 year old SCO Openserver 5.0.5 server. They can't find their installation media. They are experiencing an error at login: *LOGIN: ERROR- Failed to initialize policy manager. (IFOR_PM_FATAL) The status from the policy manager daemon (PMD -... (10 Replies)
Discussion started by: brhunt
10 Replies

11. AIX

How to find the year in last login details

Hi Friends I have a query. we had a requirement to see the last login details of our users so I ran the command last <username> and the output i get is: wtmp begins Apr 17 21:48 Now I need to know couple of things: 1. How can I see the year this log is being read from wtmp file 2. Is... (4 Replies)
Discussion started by: nathandrake13
4 Replies

12. Shell Programming and Scripting

Making wtmp files readable one at a time

New Unix user/scripter here. Been trying to solve a problem for two days now with no luck. Hoping someone here has an answer. Essentially I have a list of wtmp files which I have decompressed and copied to a temporary directory. Using the following command I can turn them into a file than can... (4 Replies)
Discussion started by: Stryfe16
4 Replies

13. Shell Programming and Scripting

Script to truncate wtmp files

Hi, Does anyone have a script to truncate the wtmp file. I want to move older entries in the wtmp to a new file and move it out of var/adm and shrink the size. (4 Replies)
Discussion started by: ElizabethPJ
4 Replies

14. Shell Programming and Scripting

How to find all files modified from midnight (i.e. from midnight (00:00:00)) of current date?

Hi there! I was wondering if someone could help me with the following: I'm trying to find all files within a directory which have been modified since midnight of the current date. Any help would be appreciated. Thank you kindly. (6 Replies)
Discussion started by: Jimmy_the_tulip
6 Replies

15. What is on Your Mind?

Not enough information...

I appreciate the fact that rules are for everyone and I screwed up by not putting a screen printout in code brackets... However, I was a bit dismayed when I received the following and tried to reply to say "Thank you" for sending me the reminder. I could not reply and had no idea what the... (4 Replies)
Discussion started by: RogerBaran
4 Replies