Find A String And Replace The Whole Line - Anywhere In The Line
This will find the line that contains the string: debug_level=
and REPLACE it with: debug_level=-1
in the file /usr/local/nagios/etc/nagios.cfg. sed -i 's/.*debug_level=.*/debug_level=-1/g' /usr/local/nagios/etc/nagios.cfgThis is handy because someone may have commented out that line so it is ignored. It might have been #debug_level=-1 so replacing the whole line means the option is not commented out. Find A String And Replace The Whole Line - Only If The Line Starts With
This will find the line that STARTS with the string
#host_perfdata_file_processing_interval=.*
and REPLACE it with:
host_perfdata_file_processing_interval=15
in the file /usr/local/nagios/etc/nagios.cfg.
sed -i 's/^#host_perfdata_file_processing_interval=.*/host_perfdata_file_processing_interval=15/g' /usr/local/nagios/etc/nagios.cfg
This is handy when you only want to change the line if it was commented out. Find A String And Delete The Whole Line - Anywhere In The Line
This will find the line that contains the strings INITIAL HOST STATE
INITIAL SERVICE STATE
and DELETE the line. In ALL files in /usr/local/nagios/var/archvies/. sed -i '/INITIAL.*.STATE/d' /usr/local/nagios/var/archives/*.logThe command is finding anything between the INITIAL and STATE words by using: .*.
It's just that my file only contains lines that have HOST or SERVICE. Find A String And Remove It
This will find the string (including the single quotes): 'perl(Test::Simple)'
and REMOVE it In the file /tmp/nagiosxi/upgrade sed -i 's/'\''perl(Test::Simple)'\''//g' /tmp/nagiosxi/upgradeFind A String And Append To The End Of The Line
This will find the line that contains the strings only_from
and APPEND the following to the end of the line: 10.25.0.0/16
To the file /etc/xinet.d/nrpe sed -i '/only_from/s/$/ 10.25.0.0\/16/' /etc/xinetd.d/nrpe |
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