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Top Forums Shell Programming and Scripting replace information in a file Post 302478294 by cabrao on Tuesday 7th of December 2010 02:23:31 PM
Old 12-07-2010
There are many ways to do that, one of them is for instance if you know the number of line you want to update:
Code:
$ cat -n file
     1  #test
     2  server ntpserver_old prefer
     3  server ntpserver_old prefer

Code:
$ awk -v s=new_ntpservername 'NR==2 && /^server/{$2=s}1' file
#test
server new_ntpservername prefer
server ntpserver_old prefer

 

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HOBBITD_CLIENT(8)					      System Manager's Manual						 HOBBITD_CLIENT(8)

NAME
hobbitd_client - hobbitd worker module for client data SYNOPSIS
hobbitd_channel --channel=client hobbitd_client [options] DESCRIPTION
hobbitd_client is a worker module for hobbitd, and as such it is normally run via the hobbitd_channel(8) program. It receives hobbitd client messages sent from systems that have the the Xymon client installed, and use the client data to generate the Xymon status messages for the cpu-, disk-, memory- and procs-columns. It also feeds Xymon data messages with the netstat- and vmstat-data collected by the client. When generating these status messages from the client data, hobbitd_client will use the configuration rules defined in the hobbit- clients.cfg(5) file to determine the color of each status message. OPTIONS
--clear-color=COLOR Define the color used when sending "msgs", "files" or "ports" reports and there are no rules to check for these statuses. The default is to show a "clear" status, but some people prefer to have it "green". If you would rather prefer not to see these status columns at all, then you can use the "--no-clear-msgs", "--no-clear-files" and "--no-clear-ports" options instead. --no-clear-msgs If there are no logfile checks, the "msgs" column will show a "clear" status. If you would rather avoid having a "msgs" column, this option causes hobbitd_client to not send in a clear "msgs" status. --no-clear-files If there are no file checks, the "files" column will show a "clear" status. If you would rather avoid having a "files" column, this option causes hobbitd_client to not send in a clear "files" status. --no-clear-ports If there are no port checks, the "ports" column will show a "clear" status. If you would rather avoid having a "ports" column, this option causes hobbitd_client to not send in a clear "ports" status. --no-ps-listing Normally the "procs" status message includes the full process-listing received from the client. If you prefer to just have the moni- tored processes shown, this option will turn off the full ps-listing. --no-port-listing Normally the "ports" status message includes the full netstat-listing received from the client. If you prefer to just have the moni- tored ports shown, this option will turn off the full netstat-listing. --config=FILENAME Sets the filename for the hobbit-clients.cfg file. The default value is "etc/hobbit-clients.cfg" below the Xymon server directory. --dump-config Dumps the configuration after parsing it. May be useful to track down problems with configuration file errors. --test Starts an interactive session where you can test the hobbit-clients.cfg configuration. --debug Enable debugging output. FILES
~xymon/server/etc/hobbit-clients.cfg SEE ALSO
hobbit-clients.cfg(5), hobbitd(8), hobbitd_channel(8), xymon(7) Xymon Version 4.2.3: 4 Feb 2009 HOBBITD_CLIENT(8)
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