Re^5: reading files to different output files.

Do I have to somehow open the input files in the script?

Yes.

open my $input_file, '<', $input_filename or die "Cannot open input fi
+le $input_filename:  $!.\n";
while (my $input_line = <$input_file>) {
    chomp $input_line;
    print "[$input_line]\n";
}
close $input_file;
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Comment on Re^5: reading files to different output files. Download Code

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Re^6: reading files to different output files. by ic23oluk (Sexton) on May 28, 2017 at 15:11 UTC
the input file should come from the command line. i don't want to determine the file within the script. Doesn't <> within the while loop open the files the users enters in the command line? If not, how can i implement the open command in my script?	[reply]
Re^7: reading files to different output files. by shmem (Chancellor) on May 28, 2017 at 16:16 UTC
Doesn't <> within the while loop open the files the users enters in the command line? Yes, and there's more to it. Read about the null filehandle in I/O Operators, there's much to learn about @ARGV, $ARGV and ARGV, all three being "magical". perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'	[reply]
Re^7: reading files to different output files. by marinersk (Priest) on May 28, 2017 at 21:53 UTC
shmem's guidance is spot on, as usual. Be careful about command line filenames with wildcards, as these are handled differently in Windows vs. Linux.	[reply]


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