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Full Discussion: What is the difference between single line mode and multiline mode in Regular expressions?
Top Forums UNIX for Advanced & Expert Users What is the difference between single line mode and multiline mode in Regular expressions? Post 302535822 by chidhu.anu on Saturday 2nd of July 2011 12:17:56 AM
Old 07-02-2011
Bug Thanks for the response.
Thanks very much for your response.

Can you please clear my question below?

I tried the below perl one-line commands but I could not get feel the result as expected.

echo "One 1\nTwo 2\nThree 3" | perl -ne 'print if m/^Two (\d+)$/m'

echo "One 1\nTwo 2\nThree 3" | perl -ne 'print if /(?m)^Two (\d+)$/'

But I got a result as expected when I executed the .pl file the same. Please find the file below.

#!/usr/bin/perl

$inputstring="One 1\nTwo 2\nThree 3";
if ( $inputstring =~ /^Two (\d+)$/m )
{
print "Matching\n";
}

Can you please tell why the perl one-line command has not given the output?
 

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LEARN ABOUT SUSE

pfunc

PFUNC(1)						User Contributed Perl Documentation						  PFUNC(1)

NAME

       pfunc - grep for perl functions

SYNOPSIS

	   pfunc subroutine FILES...

DESCRIPTION

       pfunc searches the named FILES for all calls to the given subroutine.  It will report back the file and line number each call is found on
       along with what sort of call it is

	   function	       foo()
	   class method        Class->foo()
	   object method       $obj->foo()

EXAMPLE

	   $ pfunc isa /usr/share/perl/5.6.1/*.pm
	   Called as function in /usr/share/perl/5.6.1/CGI.pm at line 316
	   Called as function in /usr/share/perl/5.6.1/CGI.pm at line 327
	   Called as function in /usr/share/perl/5.6.1/CGI.pm at line 397
	   Called as function in /usr/share/perl/5.6.1/CGI.pm at line 494
	   Called as function in /usr/share/perl/5.6.1/CGI.pm at line 495
	   Called as object method in /usr/share/perl/5.6.1/CPAN.pm at line 4957
	   Called as function in /usr/share/perl/5.6.1/Dumpvalue.pm at line 191
	   Called as function in /usr/share/perl/5.6.1/Dumpvalue.pm at line 218
	   Called as function in /usr/share/perl/5.6.1/Dumpvalue.pm at line 248
	   Called as function in /usr/share/perl/5.6.1/Dumpvalue.pm at line 251
	   Called as function in /usr/share/perl/5.6.1/Dumpvalue.pm at line 254
	   Called as object method in /usr/share/perl/5.6.1/Shell.pm at line 28
	   Called as object method in /usr/share/perl/5.6.1/base.pm at line 12

NOTES

       Its not fast, but its accurate.

AUTHOR

       Michael G Schwern <schwern@pobox.com>

SEE ALSO

       Module::Info

perl v5.12.1							    2002-12-05								  PFUNC(1)
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