Yes, when I read my posting again, I realised that I've made some mistakes in which may cause some confusion. Sorry about that.
Here are the corrections.
For example:
Let's say the month of august 2010 is already over, so that means we now in september 2010. Based on my cronjob task on 1st of September, how to extract the log info of the previous month, in this case, August?
My script will always extract the the log info from the previous month.
Please kindly advice.
Thanks a lot.
Cheers.
---------- Post updated at 11:02 AM ---------- Previous update was at 10:56 AM ----------
Hi tyler_durden,
Thanks for your response.
When I tried your method, there are some errors as shown below. I'm unable to use your suggested option of date function.
Code:
# date --date='1 month ago' '+%b'
date: illegal option -- -
Usage: date [-u] [+format]
date [-u] [mmddhhmm[[cc]yy]]
date [-a [-]sss.fff]
# last -R | grep $(date --date='1 month ago' '+%b')
date: illegal option -- -
Usage: date [-u] [+format]
date [-u] [mmddhhmm[[cc]yy]]
date [-a [-]sss.fff]
usage: grep [-E|-F] [-c|-l|-q] [-bhinsvwx] -e pattern_list...
[-f pattern_file...] [file...]
usage: grep [-E|-F] [-c|-l|-q] [-bhinsvwx] [-e pattern_list...]
-f pattern_file... [file...]
usage: grep [-E|-F] [-c|-l|-q] [-bhinsvwx] pattern [file...]
When I checked my environment, it shows the following:
Code:
SHELL=/sbin/sh
Please kindly advice.
Thanks.
Cheers.
Last edited by Scott; 08-14-2010 at 06:47 AM..
Reason: Code tags
hi guys i need to extract information from log files generated by an application.
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----------------------------------------------
Fri Aug 03 12:06:43 WST 2007 INFO: Running project PROJECT1
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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
08-13-2010
