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Full Discussion: Getting lines before and until next pattern in file /awk, sed
Top Forums Shell Programming and Scripting Getting lines before and until next pattern in file /awk, sed Post 302715189 by ocramas on Sunday 14th of October 2012 03:34:08 AM
Old 10-14-2012
Quote:
Originally Posted by msabhi
Code:
awk '/IP *= *1\.1\.1\.1/ {print;while($0!~ /SNMP-END/){getline;print;}}' input_file

or
as Don Cragun has pointed out use nawk
Code:
nawk '/IP *= *1\.1\.1\.1/ {print;while($0!~ /SNMP-END/){getline;print;}}'  input_file

What is the meaning of....
while($0!~ /SNMP-END/). ??

I know what it is doing, but I don't understand the $0!...

Thanks
 

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LEARN ABOUT DEBIAN

snmp::info::layer2::cisco

Info::Layer2::Cisco(3pm)				User Contributed Perl Documentation				  Info::Layer2::Cisco(3pm)

NAME

       SNMP::Info::Layer2::Cisco - SNMP Interface to L3 and L2+L3 IOS Cisco Device that are not covered in other classes.

AUTHOR

       Max Baker

SYNOPSIS

	# Let SNMP::Info determine the correct subclass for you.
	my $cisco = new SNMP::Info(
			       AutoSpecify => 1,
			       Debug	   => 1,
			       # These arguments are passed directly to SNMP::Session
			       DestHost    => 'myswitch',
			       Community   => 'public',
			       Version	   => 2
			       )
	   or die "Can't connect to DestHost.
";

	my $class      = $cisco->class();
	print "SNMP::Info determined this device to fall under subclass : $class
";

DESCRIPTION

       Subclass for Generic Cisco Routers running IOS

   Inherited Classes
       SNMP::Info::CiscoVTP
       SNMP::Info::CDP
       SNMP::Info::CiscoStats
       SNMP::Info::CiscoImage
       SNMP::Info::CiscoRTT
       SNMP::Info::CiscoQOS
       SNMP::Info::CiscoConfig
       SNMP::Info::Layer2

   Required MIBs
       Inherited Classes' MIBs
	   See "Required MIBs" in SNMP::Info::CiscoVTP for its own MIB requirements.

	   See "Required MIBs" in SNMP::Info::CiscoStats for its own MIB requirements.

	   See "Required MIBs" in SNMP::Info::CDP for its own MIB requirements.

	   See "Required MIBs" in SNMP::Info::CiscoImage for its own MIB requirements.

	   See "Required MIBs" in SNMP::Info::CiscoRTT for its own MIB requirements.

	   See "Required MIBs" in SNMP::Info::CiscoQOS for its own MIB requirements.

	   See "Required MIBs" in SNMP::Info::CiscoConfig for its own MIB requirements.

	   See "Required MIBs" in SNMP::Info::Layer2 for its own MIB requirements.

GLOBALS

       These are methods that return scalar value from SNMP

       $cisco->vendor()
	       Returns 'cisco'

   Global Methods imported from SNMP::Info::CiscoVTP
       See documentation in "GLOBALS" in SNMP::Info::CiscoVTP for details.

   Globals imported from SNMP::Info::CDP
       See documentation in "GLOBALS" in SNMP::Info::CDP for details.

   Globals imported from SNMP::Info::CiscoStats
       See documentation in "GLOBALS" in SNMP::Info::CiscoStats for details.

   Globals imported from SNMP::Info::CiscoImage
       See documentation in "GLOBALS" in SNMP::Info::CiscoImage for details.

   Globals imported from SNMP::Info::CiscoRTT
       See documentation in "GLOBALS" in SNMP::Info::CiscoRTT for details.

   Globals imported from SNMP::Info::CiscoQOS
       See documentation in "GLOBALS" in SNMP::Info::CiscoQOS for details.

   Globals imported from SNMP::Info::CiscoConfig
       See documentation in "GLOBALS" in SNMP::Info::CiscoConfig for details.

   Globals imported from SNMP::Info::Layer2
       See documentation in "GLOBALS" in SNMP::Info::Layer2 for details.

TABLE METHODS

       These are methods that return tables of information in the form of a reference to a hash.

   Table Methods imported from SNMP::Info::CiscoVTP
       See documentation in "TABLE METHODS" in SNMP::Info::CiscoVTP for details.

   Table Methods imported from SNMP::Info::CDP
       See documentation in "TABLE METHODS" in SNMP::Info::CDP for details.

   Table Methods imported from SNMP::Info::CiscoStats
       See documentation in "TABLE METHODS" in SNMP::Info::CiscoStats for details.

   Table Methods imported from SNMP::Info::CiscoImage
       See documentation in "TABLE METHODS" in SNMP::Info::CiscoImage for details.

   Table Methods imported from SNMP::Info::CiscoRTT
       See documentation in "TABLE METHODS" in SNMP::Info::CiscoRTT for details.

   Table Methods imported from SNMP::Info::CiscoQOS
       See documentation in "TABLE METHODS" in SNMP::Info::CiscoQOS for details.

   Table Methods imported from SNMP::Info::CiscoConfig
       See documentation in "TABLE METHODS" in SNMP::Info::CiscoConfig for details.

   Table Methods imported from SNMP::Info::Layer2
       See documentation in "TABLE METHODS" in SNMP::Info::Layer2 for details.

perl v5.12.4							    2011-09-28						  Info::Layer2::Cisco(3pm)
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