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for this warning " message: line 10: [: Use: integer expression expected "
i think it because bash shell cant read -gt,-lt, etc
u can use ksh so they can read it

and i've tried that script...

its work!!
thanks for ur advice

@dinjo_jo
the only command that i know before to show process only top that why i only used it :D

i have question about this :

DOMAIN=`uname -n`
usage=`top | grep idle | cut -c 13-14`
if...

so how to compare integer with decimal???

since cpu usage use decimal number
can i compare it??
exp:

usage=`top | grep idle | cut -b 13-17'
if [$usage -lt 45 ] then
echo"temp $usage"
fi


can i use code like that???

thanks

guys i need suggestion about how to grep cpu usage and then compare it
example :
if cpu usage <= 40% then print normal and how much cpu usage is
or cpu usage between 40%-65% print normal and...