02-18-2013
bash has a nice feature. You declare a simple array variable 'typedef -a myarray' and then 'while read -a myarray' and the fields are in the array for each line. Awk does that sort of thing natively.
BTW, free memory is a worthless spec in a VM system. That stat is left over from the old days of memory resident everything. delta page faults is more interesting, and load (cpu avg queue depth).
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e.g.
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Input file:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 (6 Replies)
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SA2(8) Linux User's Manual SA2(8)
NAME
sa2 - Write a daily report in the /var/log/sa directory.
SYNOPSIS
/usr/lib/sa/sa2
DESCRIPTION
The sa2 command is a shell procedure variant of the sar command which writes a daily report in the /var/log/sa/sardd file, where the dd
parameter indicates the current day. The sa2 command handles all of the flags and parameters of the sar command.
The sa2 command is designed to be started automatically by the cron command.
EXAMPLES
To run the sa2 command daily, place the following entry in your root or adm crontab file:
5 19 * * 1-5 /usr/lib/sa/sa2 -A &
This will generate a daily report called /var/log/sa/sardd It will also remove reports more than one week old.
FILES
/var/log/sa/sardd
Indicate the daily report 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), sa1(8), mpstat(1), iostat(1), vmstat(8)
http://perso.wanadoo.fr/sebastien.godard/
Linux DECEMBER 1999 SA2(8)