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Shell Programming and Scripting
Could someone help with setting loops?
Post 302669251 by vpundit on Tuesday 10th of July 2012 05:38:32 PM
07-10-2012
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how can I use "for" to have two loops :
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#End
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But I have error message :
syntax error at line 1 : `(' unexpected
Many thanks before.
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LEARN ABOUT OPENDARWIN
sa1
sa1(8) BSD System Manager's Manual sa1(8) NAME
sa1 -- Generate a system activity daily data file. SYNOPSIS
/usr/lib/sa/sa1 [t n] DESCRIPTION
The sa1 command is a shell script used to invoke the system activity data collector, sadc. The binary sample data is collected at intervals t seconds apart, in a loop n times. The binary sample data is written to the standard daily data file, /var/log/sa/sadd where the dd repre- sents the current day of the month. sa1 is intended to be started by cron. EXAMPLE CRON ENTRY
# Starting at 8am collect system activity records # every 20 minutes for 12 hours # 20 minutes = 1200 seconds # 12 hours with 3 samples each hour = 36 loops 0 8 * * 1-5 /usr/lib/sa/sa1 1200 36 # After the 12 hour period, # collect a system activity report 30 20 * * 1-5 /usr/lib/sa/sa2 -A FILES
/var/log/sa/sadd Default daily activity file that holds the binary sampling data. dd are digits that represent the day of the month. SEE ALSO
sa2(8), sadc(8), sar(1), iostat(8), vm_stat(1), netstat(1), top(1), sc_usage(1), fs_usage(1), crontab(1), crontab(5) Mac OS X Jul 25 2003 Mac OS X