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How can I determine the current CPU utilization from the shell in Linux?
For example, I get the load average like so:
cat /proc/loadavg
Outputs:
0.18 0.48 0.46 4/234 30719
Linux does not have any system variables that give the current CPU utilization. Instead, you have to read
/proc/statseveral times: each column in thecpu(n)lines gives the total CPU time, and you have to take subsequent readings of it to get percentages. See this document to find out what the various columns mean.