I need to write a shell script which checks the CPU utilization is above 90% for a particular process.

So far I have done this

prstat 0 1 | grep weblogic | awk '{print $9}'

This give an output like this

0.1%
0.0%
0.0%
0.0%
0.0%


Now I need to assign this to an array and check if the value exceeds 90%.
If so then I should print an alert message in the script.

Please help me to do the same.

Thanks
Joe