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Top Forums Shell Programming and Scripting Working out percentage of memory utilization Post 303001623 by simpsa27 on Tuesday 8th of August 2017 06:37:12 AM
Old 08-08-2017
Working out percentage of memory utilization

Hi there

I am middle of writing a script to allow me to see the % of the memory which is being used.

When I submit my script I don't get any errors but I just get a blank output.

Any pointers?

Code:
available=`free -m | grep available`

if [ "$available"="$new_linux_version_available" ]
then

mem_utalization=`sum=$(($mem_total/($mem_total - $mem_available) * 100))`

else
mem_buff_cache_used=`free -m  | grep ^-/+ | awk  '{print $3}'`
mem_utalization=`sum=$(((mem_buff_cache_used/($mem_buff_cache_used + $mem_buff_cache_free)) * 100))`

fi

echo $mem_utalization
echo $mem_buff_cache_used
echo $mem_buff_cache_free

Code:
[casupport@wycvlapph033 test]$ ./free_memory_script.sh



[casupport@wycvlapph033 test]$

No error message or anything comes back? All the variables work as they work in the command line

Code:
[casupport@wycvlapph033 ~]$ free -m  | grep ^-/+ | awk  '{print $3}'
7281
[casupport@wycvlapph033 ~]$ free -m  | grep ^-/+ | awk  '{print $4}'
8757
[casupport@wycvlapph033 ~]$

Cheers
Alex
 

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WINCACHE_RPLIST_MEMINFO(3)						 1						WINCACHE_RPLIST_MEMINFO(3)

wincache_rplist_meminfo - Retrieves information about memory usage by the resolve file path cache

SYNOPSIS
array wincache_rplist_meminfo (void ) DESCRIPTION
Retrieves information about memory usage by resolve file path cache. RETURN VALUES
Array of meta data that describes memory usage by resolve file path cache. or FALSE on failure The array returned by this function contains the following elements: o memory_total - amount of memory in bytes allocated for the resolve file path cache o memory_free - amount of free memory in bytes available for the resolve file path cache o num_used_blks - number of memory blocks used by the resolve file path cache o num_free_blks - number of free memory blocks available for the resolve file path cache o memory_overhead - amount of memory in bytes used for the internal structures of resolve file path cache EXAMPLES
Example #1 A wincache_rplist_meminfo(3) example <pre> <?php print_r(wincache_rplist_meminfo()); ?> </pre> The above example will output: Array ( [memory_total] => 9437184 [memory_free] => 9416744 [num_used_blks] => 23 [num_free_blks] => 1 [memory_overhead] => 416 ) SEE ALSO
wincache_fcache_fileinfo(3), wincache_fcache_meminfo(3), wincache_ocache_fileinfo(3), wincache_ocache_meminfo(3), wincache_rplist_file- info(3), wincache_refresh_if_changed(3), wincache_ucache_meminfo(3), wincache_ucache_info(3), wincache_scache_info(3), wincache_scache_mem- info(3). PHP Documentation Group WINCACHE_RPLIST_MEMINFO(3)
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