11-27-2006
Sorry. Actually when i say it works, this means all the suggestions above given work. that's why i did not specify which exact one works. You can use cat /dev/null or cp /dev/null. The mistake i made was with the timing. I did not know that a * means every minute. I put 1 * * * * this means every first minute (only) of every hour that is why i do not get the output as i need to wait for the next hour to get another 1 minute output. But now there is a question. Is there anyway to do a one-whole-day reporting? In other words, from 7am today till 6.59 am tomorrow. I did it this way:
* * * * * /usr/lib/sa/sa1 60 60 &
5 9 * * * /usr/lib/sa/sa2 -s 9:00 -e 8:59 -A &
I do not raelly know what it means exactly in the first line. But, 2nd line should mean at 9.05am every day, produce the output of sa2 where it will start recording the activity from 9am till 8.59am the next day. Is there any mistake?
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utmpx(4) File Formats utmpx(4)
NAME
utmpx, wtmpx - utmpx and wtmpx database entry formats
SYNOPSIS
#include <utmpx.h>
/var/adm/utmpx
/var/adm/wtmpx
DESCRIPTION
The utmpx and wtmpx files are extended database files that have superseded the obsolete utmp and wtmp database files.
The utmpx database contains user access and accounting information for commands such as who(1), write(1), and login(1). The wtmpx database
contains the history of user access and accounting information for the utmpx database.
USAGE
Applications should not access these databases directly, but should use the functions described on the getutxent(3C) manual page to inter-
act with the utmpx and wtmpx databases to ensure that they are maintained consistently.
FILES
/var/adm/utmpx user access and adminstration information
/var/adm/wtmpx history of user access and adminstrative information
SEE ALSO
getutxent(3C), wait(3C)wait.h(3HEAD)
SunOS 5.10 22 Feb 1999 utmpx(4)