<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)">  <style>  </style>  </head> <body bgcolor=white lang=EN-US link=blue vlink=purple> <div class=Section1> Hi<o:p></o:p> <o:p> </o:p> I am trying to use this option but the issue I have now is with the following:<o:p></o:p> <o:p> </o:p> The output from the /proc/meminfo is as follows:<o:p></o:p> <o:p> </o:p> MemFree: 206788 kB<o:p></o:p> <o:p> </o:p> However, when I try to use cut in order to only get the numeric value, the output I get back does not work that well as it still includes the <spaces> infront of the numeric value as well as the kb at the end…<o:p></o:p> <o:p> </o:p> I have even tried this with free and the same result….<o:p></o:p> <o:p> </o:p> What should I use as delimiter to the cut command?<o:p></o:p> <o:p> </o:p> Any other suggestions on how to only get the numeric value?<o:p></o:p> <o:p> </o:p> Commands used with output:<o:p></o:p> <o:p> </o:p> cat /proc/meminfo | grep MemTotal | cut -f 2 -d ":"<o:p></o:p> <o:p> </o:p> output :<o:p></o:p> <o:p> </o:p> 2067884 kB<o:p></o:p> <o:p> </o:p> <o:p> </o:p> As you can see the spaces are all out of place…..<o:p></o:p> <o:p> </o:p> I have also noticed that when using a space as delimiter and counting the spaces to the value, then you get the result, however if the numeric value increase by one digit (i.e. from 6 digits to 7 digits for instance) then the amount of spaces change and the program does not work.<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <div> <div class=MsoNormal align=center style='text-align:center'> <hr size=2 width="100%" align=center tabindex=-1> </div> From: nagios-users-bounces@lists.sourceforge.net [mailto:nagios-users-bounces@lists.sourceforge.net] On Behalf Of Dale J. Chatham Sent: Tuesday, March 11, 2008 1:15 PM To: Machiel Richards Cc: nagios-users@lists.sourceforge.net Subject: Re: [Nagios-users] Nagios memory percentages<o:p></o:p> </div> <o:p> </o:p> Looc at the /proc/meminfo file and the vmstat command. Divide memory parameter (free, used, whatever) by total memory, multiply by 100 and you have percent. Machiel Richards wrote: <o:p></o:p> Hi Everyone<u1:p></u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> Maybe someone can assist me, but this may be a more linux specific question than Nagios even though related to Nagios.<u1:p></u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> I need to monitor the memory usage in percentage on Nagios and would like to rather write my own scripts for this.<u1:p></u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> I know there are snmp versions of this to do the job for me, however I do not want to complicate the systems with too many clients running on them.<u1:p></u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> Currently we are using the normal nrpe to connect to the systems and run scripts remotely, however we do not have one to monitor the memory.<u1:p></u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> On the web there are a lot of references to the snmp commands but as all the systems are production and we might be having a couple of upgrades soon, I would like to rather keep it simple and only run one client on it for all Nagios connections.<u1:p></u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> My question is this… I can use the command free to get the amount of memory , used, free etc… <u1:p></u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> How can I write this into a script to display as percentages… is there another command I can use or maybe an option that I do not know about?<u1:p></u1:p><o:p></o:p> <u1:p> </u1:p><o:p></o:p> tx<u1:p></u1:p><o:p></o:p> *** Disclaimer *** <o:p></o:p> The information contained in this e-mail is confidential and legally privileged and is intended solely for the addressee and to others who have the authority to receive it. 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