Transient did a great job giving a generally safe and applicable answer, though a bit wordy for my tastes. Pass the filename wildcard on the command line, and redirect STDOUT: 
#@ARGV = glob( @ARGV ); # needed for DOS
while (<>)
{
  s/match this/replace it with this/;
  print;
}

[download]

-QM
--
Quantum Mechanics: The dreams stuff is made of

In reply to Re^2: how do i parse multiple files and write all of the results into single file by QM
in thread how do i parse multiple files and write all of the results into single file by my_perl

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