[root@localhost ~]# locate nagios/plugins |head -n1 /usr/lib64/nagios/plugins check_swap  [root@localhost ~]# /usr/lib64/nagios/plugins/check_swap --help check_swap v2.2.1 (nagios-plugins 2.2.1) Copyright (c) 2000-2014 Nagios Plugin Development Team <devel@nagios-plugins.org> Check swap space on local machine. Usage: check_swap [-av] -w % -c % -w -c Options: -h, --help Print detailed help screen -V, --version Print version information --extra-opts=[section][@file] Read options from … Continue reading nagios plugins functionality