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Shell Programming and Scripting
trim spaces in a file
Post 302327502 by dinjo_jo on Monday 22nd of June 2009 01:42:09 AM
06-22-2009
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LEARN ABOUT BSD
ac
AC(8) System Manager's Manual AC(8) NAME
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)