check_mem (Visit this link)

This plugin may be used as nrpe plugin and checks the amount of memory free, used and total available by using the linux \"free -mt\" command.

History:
+++++ 1.8 Rouven Homann - rouven DOT homann AT cimt DOT de
* added findbin patch from Duane Toler
* added backward compatibility patch from Timour Ezeev

+++++ 1.7 Ingo Lantschner - ingo AT boxbe DOT com
* adapted for systems with no swap (avoiding divison through zero)

+++++ 1.6 Cedric Temple - cedric DOT temple AT cedrictemple DOT info
* add swap monitoring
* if warning and critical threshold are 0, exit with OK
* add a directive to exclude/include buffers

+++++ 1.5 Rouven Homann - rouven DOT homann AT cimt DOT de
* perfomance tweak with free -mt (just one sub process started instead of 7)
* more code cleanup

+++++ 1.4 Garrett Honeycutt - gh@3gupload.com
* Fixed PerfData output to adhere to standards and show crit/warn values

+++++ 1.3 Rouven Homann - rouven DOT homann AT cimt DOT de
* Memory installed, used and free displayed in verbose mode
* Bit Code Cleanup

+++++ 1.2 Rouven Homann - rouven DOT homann AT cimt DOT de
* Bug fixed where verbose output was required (nrpe2)
* Bug fixed where perfomance data was not displayed at verbose output
* FindBin Module used for the nagios plugin path of the utils.pm

+++++ 1.1 Rouven Homann - rouven DOT homann AT cimt DOT de
* Status Support (-c, -w)
* Syntax Help Informations (-h)
* Version Informations Output (-V)
* Verbose Output (-v)
* Better Error Code Output (as described in plugin guideline)

+++++ 1.0 Garrett Honeycutt - gh@3gupload.com
* Initial Release