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Full Discussion: df -k | grep (somthing)
Top Forums Shell Programming and Scripting df -k | grep (somthing) Post 302172664 by katlan on Tuesday 4th of March 2008 11:55:14 AM
Old 03-04-2008
CPU utilization:

In my case, we have 4 for cpus, i take total line and idle field
$ top -n 1
16:44:03 up 24 days, 20:09, 6 users, load average: 1.08, 1.02, 1.01
441 processes: 439 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 26.3% 0.0% 0.7% 0.0% 0.0% 0.0% 72.9%
cpu00 38.0% 0.0% 0.0% 0.0% 0.0% 0.0% 61.9%
cpu01 3.7% 0.0% 0.9% 0.0% 0.0% 0.0% 95.2%
cpu02 62.8% 0.0% 0.0% 0.0% 0.0% 0.0% 37.1%
cpu03 0.9% 0.0% 1.9% 0.0% 0.0% 0.0% 97.1%



$ top -n 1 | grep total | tr -s " " | cut -d" " -f9
73.8%

-----------------------------------------------------------
#!/bin/sh

FREE_CPU=`top -n 1 | grep total | tr -s " " | cut -d" " -f9`
echo "Free CPU: ${FREE_CPU}"
-----------------------------------------------------------
 

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LEARN ABOUT DEBIAN

sg_get_cpu_percents

sg_get_cpu_stats(3)					     Library Functions Manual					       sg_get_cpu_stats(3)

NAME

       sg_get_cpu_stats, sg_get_cpu_stats_diff, sg_get_cpu_percents - get cpu usage

SYNOPSIS

       #include <statgrab.h>

       sg_cpu_percents *sg_get_cpu_percents(void);

       sg_cpu_stats *sg_get_cpu_stats(void);

       sg_cpu_stats *sg_get_cpu_stats_diff(void);

DESCRIPTION

       sg_get_cpu_stats()  and	sg_get_cpu_stats_diff()  both  return  static pointers of type sg_cpu_stats.  sg_get_cpu_stats() returns the total
       amount of "ticks" the operating system has spent in each of the different states. sg_get_cpu_stats_diff() returns the difference in "ticks"
       for  each  of  the  states  since  last time sg_get_cpu_stats_diff() or sg_get_cpu_stats() was called. If it has never been called, it will
       return the result of sg_get_cpu_stats().

       The value stored (the "ticks") will vary between operating systems. For example Solaris has a total of 100 per second, while Linux has sub-
       stantially more. Also, different operating systems store different information - you won't find nice cpu on Solaris for example.

       Because of this, you will ideally always want to work on a scale against the total, or in percentages.

       sg_get_cpu_percents() returns a pointer to a static sg_cpu_percents. The function calls sg_get_cpu_stats_diff() and changes the values into
       percentages. If it has never been called before (and nor has sg_get_cpu_stats() or sg_get_cpu_stats_diff()), the returned percentages  will
       be the systems total ever since its uptime. (Unless the counters have cycled)

RETURN VALUES

       There are two structures returned by the CPU statistics functions.

       typedef struct{
	       long long user;
	       long long kernel;
	       long long idle;
	       long long iowait;
	       long long swap;
	       long long nice;
	       long long total;
	       time_t systime;
       }sg_cpu_stats;

       typedef struct{
	       float user;
	       float kernel;
	       float idle;
	       float iowait;
	       float swap;
	       float nice;
	       time_t time_taken;
       }sg_cpu_percents;

       user  kernel  idle  iowait  swap  nice
	      The different CPU states.

       systime	time_taken
	      The time taken in seconds since the last call of the function, or the system time.

SEE ALSO

       statgrab(3)

WEBSITE

       http://www.i-scream.org/libstatgrab/

i-scream						   $Date: 2005/04/25 11:25:45 $ 				       sg_get_cpu_stats(3)
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