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UNIX for Dummies Questions & Answers
crontab questions
Post 25942 by hhh101 on Thursday 8th of August 2002 12:32:38 AM
08-08-2002
about crontab
Now I give a example:
5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A
and I give some comment:
the first column is miniue [0-59];
the second is hour[0-23];
the third is day[1-31];
the fouth is month[1-12];
the fifth is week[0-6] ,0 means sunday.
and the later is command that you want to run when time elapses.
for more information,you could use command "man crontab" in the UNIX shell.
5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A
and I give some comment:
the first column is miniue [0-59];
the second is hour[0-23];
the third is day[1-31];
the fouth is month[1-12];
the fifth is week[0-6] ,0 means sunday.
and the later is command that you want to run when time elapses.
for more information,you could use command "man crontab" in the UNIX shell.
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LEARN ABOUT REDHAT
sa1
SA1(8) Linux User's Manual SA1(8) NAME
sa1 - Collect and store binary data in the system activity daily data file. SYNOPSIS
/usr/lib/sa/sa1 [ interval count ] DESCRIPTION
The sa1 command is a shell procedure variant of the sadc command and handles all of the flags and parameters of that command. The sa1 com- mand collects and store binary data in the /var/log/sa/sadd file, where the dd parameter indicates the current day. The interval and count parameters specify that the record should be written count times at interval seconds. If you do not specify these parameters, a single record is written. The sa1 command is designed to be started automatically by the cron command. EXAMPLES
To create a daily record of sar activities, place the following entry in your root or adm crontab file: 0 8-18 * * 1-5 /usr/lib/sa/sa1 1200 3 & FILES
/var/log/sa/sadd Indicate the daily data file, where the dd parameter is a number representing the day of the month. AUTHOR
Sebastien Godard <sebastien.godard@wanadoo.fr> SEE ALSO
sar(1), sadc(8), sa2(8), mpstat(1), iostat(1), vmstat(8) http://perso.wanadoo.fr/sebastien.godard/ Linux DECEMBER 1999 SA1(8)