Top utility

[Rahul_13]

Hi,

I want to write a script that would execute 'top' in the background for 1 hour time and collect the reports in a file.

Can anyone please help me.

Thanks,
Rahul

[Jared Middleton]

Rahul,

Have you reviewed the man pages for top?
$ man top

Depending on the version of top you're using, you might have -b and -n options.
My version of top...
$ top -v
top (procps version 2.0.7)

..has these options:

n Number of iterations. Update the display this number
of times and then exit.

b Batch mode. Useful for sending output from top to
other programs or to a file. In this mode, top will
not accept command line input. It runs until it pro-
duces the number of iterations requested with the n
option or until killed. Output is plain text suitable
for display on a dumb terminal.

By default top refreshes every 5 seconds, so if you have the above options, you might simply run:
$ top -b -n 720 > filename &

-Jared

[ramkumar]

hi


# nohup top -d 30 -n 200 -s >/tmp/temptop.out

where -d indicates time interval betwwen each top command
-n indicates number of top outputs


good luck

ram

[Muthukumar_5]

We can run top based on time delay and count. If you run continuously, there might not be more changes. You can use delay of five secs there.

So that,
------------------------------
#!/bin/sh
# top script
# top.sh
time=0
count=1
hour=${1:-1}
sleep=${2:-5}

while [[ $time -le $(($hour*3600)) ]]
do

# Secure mode and run 1 count
top -s -n 1 >> /tmp/topinfo.$count
sleep 5
let count=count+1
let time=time+5

done

# exit
exit 0
--------------------
Run this script as,

sh top.sh 1 5 &
so that it will run in background

and exit after 1 hour

You can collect data informations there at /tmp/topinfo.* files there.