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Full Discussion: if match found go to a particular line in perl
Top Forums Shell Programming and Scripting if match found go to a particular line in perl Post 302180370 by user_prady on Monday 31st of March 2008 12:58:20 AM
Old 03-31-2008
how to do it in perl
Quote:
Originally Posted by era
I don't think I have captured all your requirements correctly but at least it's a start. If I am allowed to guess, what would be easiest is collect the output in a variable and print it after you have seen *Main End and printed out the line which immediately preceded it.
I tried almost all way using next , redo and last command in perl , But I can't get these syntax correctly in perl. I know its easy ,but still I cant find the efficient way using while and next statement in perl.

I am trying to do the follwoing in perl

Code:
nawk ' {
        if($0 ~ /^\*Main Start/){
	     while( $0 !~ /^\*Main End/){
	     print $0;
             getline;
        }
     }
 } ' my.txt

One more code I want to do it in perl pls give me some basic idea how to do it without creating any temporary files ..

Code:
TMP=/tmp/my_tmp$$
nawk '
/\*Main End/{
split(x,arr,",")
print "Loop  " arr[1]
};
{x=$0
}
' my.txt > $TMP 

nawk '{
if($0 ~ /^Loop/){
    loop = $2 
    next;
  }
if($0 ~ /^\*Main Start/){
     printf "\nrepeat ("
     print  loop

} ' $TMP $my.txt


Thanks & Regards,
user_prady
Last edited by user_prady; 03-31-2008 at 02:48 AM..
 

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LEARN ABOUT DEBIAN

pfunc

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

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 v5.10.1							    2010-10-03								 PFUNC(1p)
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