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One way could put some command like the following in your cron.<br />
<br />

<pre><code id="code-20-39240878-1">ps ahkpcpu -o&quot;%C%c&quot; | while read c a;do if [[ `echo &quot;$c &gt;= 50&quot; | bc` == 1 ]] ; then echo &quot;$c $a&quot;; fi; done &gt;&gt; /path/file</code></pre>
<br />
<br />
Although you man want to explore tools like sar that do historical record keeping.
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One way could put some command like the following in your cron.



ps ahkpcpu -o"%C%c" | while read c a;do if [[ `echo "$c >= 50" | bc` == 1 ]] ; then echo "$c $a"; fi; done >> /path/file



Although you man want to explore tools like sar that do historical record keeping.

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farzanj, thank you. The thing with sar is that, unlike top, it shows the CPU utilization but does not show which process has taken up the CPU capacity, am I right or am I missing something? Thank you.
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farzanj, thank you. The thing with sar is that, unlike top, it shows the CPU utilization but does not show which process has taken up the CPU capacity, am I right or am I missing something? Thank you.

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Not sure if you want the process id (PID) or the actual command, but to do both, just add in %p (process id) and %a (command) to the ps output options:
<pre><code id="code-20-39241678-1">ps ahkpcpu -o&quot;%p%C%c%a&quot;</code></pre>
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Not sure if you want the process id (PID) or the actual command, but to do both, just add in %p (process id) and %a (command) to the ps output options:

ps ahkpcpu -o"%p%C%c%a"

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<div class="content wysiwyg-content">
Hello, <br />
<br />
I have a Ubuntu 12.04 machine. At times I see that there are some processes that are consuming very high CPU capacity. I was wondering if there is a script I can use that runs in the background on my machine that will log all the processes that consume more than 50% of the CPU capacity at any given time and log the output to a text file to review? Thank you.<br />
<br />
A
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Hello, 

I have a Ubuntu 12.04 machine. At times I see that there are some processes that are consuming very high CPU capacity. I was wondering if there is a script I can use that runs in the background on my machine that will log all the processes that consume more than 50% of the CPU capacity at any given time and log the output to a text file to review? Thank you.

A

log processes with high CPU usage?

The term 'shell' refers to a general class of text-based command interpreters most often associated with the UNIX and Linux operating systems. Popular shells include Bourne, Debian Almquist (dash), Korn (ksh), Bourne Again (bash) and the C shell family (csh). Some view the DOS 'cmd' prompt as a minimal shell of sorts. It is also possible to install Cygwin on Windows and emulate a full Unix environment with complete shell capabilities. Terminal emulators, such as xterm, GNOME Terminal and OS X Terminal, can be used to access shell.