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Full Discussion: Printing between 2 matches with Perl
Top Forums Shell Programming and Scripting Printing between 2 matches with Perl Post 302380671 by anand_bh on Wednesday 16th of December 2009 02:03:10 AM
Old 12-16-2009
Printing between 2 matches with Perl
Quote:
Originally Posted by skmdu
Code:
$perl -e 'while(<>){  exit if(/DISPLAY/); print $_; }' < test

This perl one liner will print the lines from the file called test.. If it gets the string DISPLAY, it just exit from the execution. Hope this helps you.
Can we please modify this perl one-liner to print lines between pattern1 and pattern2 in a file?

Currently it prints lines till pattern2.
Last edited by pludi; 12-16-2009 at 03:26 AM..
 

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LEARN ABOUT LINUX

perlivp

PERLIVP(1)						 Perl Programmers Reference Guide						PERLIVP(1)

NAME

       perlivp - Perl Installation Verification Procedure

SYNOPSIS

       perlivp [-a] [-p] [-v] [-h]

DESCRIPTION

       The perlivp program is set up at Perl source code build time to test the Perl version it was built under.  It can be used after running:

	   make install

       (or your platform's equivalent procedure) to verify that perl and its libraries have been installed correctly.  A correct installation is
       verified by output that looks like:

	   ok 1
	   ok 2

       etc.

OPTIONS

       -h help
	    Prints out a brief help message.

       -a run all tests
	    Normally tests for optional features are skipped.  With -a all tests are executed.

       -p print preface
	    Gives a description of each test prior to performing it.

       -v verbose
	    Gives more detailed information about each test, after it has been performed.  Note that any failed tests ought to print out some
	    extra information whether or not -v is thrown.

DIAGNOSTICS

       o   print "# Perl binary `$perlpath' does not appear executable.
";

	   Likely to occur for a perl binary that was not properly installed.  Correct by conducting a proper installation.

       o   print "# Perl version `$]' installed, expected $ivp_VERSION.
";

	   Likely to occur for a perl that was not properly installed.	Correct by conducting a proper installation.

       o   print "# Perl @INC directory `$_' does not appear to exist.
";

	   Likely to occur for a perl library tree that was not properly installed.  Correct by conducting a proper installation.

       o   print "# Needed module `$_' does not appear to be properly installed.
";

	   One of the two modules that is used by perlivp was not present in the installation.	This is a serious error since it adversely affects
	   perlivp's ability to function.  You may be able to correct this by performing a proper perl installation.

       o   print "# Required module `$_' does not appear to be properly installed.
";

	   An attempt to "eval "require $module"" failed, even though the list of extensions indicated that it should succeed.	Correct by
	   conducting a proper installation.

       o   print "# Unnecessary module `bLuRfle' appears to be installed.
";

	   This test not coming out ok could indicate that you have in fact installed a bLuRfle.pm module or that the "eval " require
	   "$module_name.pm"; "" test may give misleading results with your installation of perl.  If yours is the latter case then please let
	   the author know.

       o   print "# file",+($#missing == 0) ? '' : 's'," missing from installation:
";

	   One or more files turned up missing according to a run of "ExtUtils::Installed -> validate()" over your installation.  Correct by
	   conducting a proper installation.

       o   print "# Perl header `$_' does not appear to be properly installed.
";

	   Correct by running h2ph over your system's C header files.  If necessary, edit the resulting *.ph files to eliminate perl syntax
	   errors.

       For further information on how to conduct a proper installation consult the INSTALL file that comes with the perl source and the README
       file for your platform.

AUTHOR

       Peter Prymmer

perl v5.12.4							    2013-03-18								PERLIVP(1)
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