I think ur requirement is extract upto the makefile
if u wish u can modify ur regexp to as

inputs:
*********

#$str='make -r -f ..\../tools/cell/makefile cell.lib';
$str='make -r -f ..\../system-build/ali/text/makefile cell.lib';

regexp:
**********
$str=~/(.*)\s(\.\.\\(.*)\/makefile)/si ;
print $2;

or

$str=~/(.*)\s(.*\/makefile)/si ;
print $2;

outputs:
****************
..\../tools/cell/makefile
..\../system-build/ali/text/makefile

[download]

Regards
Senthil Kumar.k

In reply to Re: using regular expression to extract subset from a line by perlsen
in thread using regular expression to extract subset from a line by ramthen

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