Perhaps I've totally missed the point, but if you want to add line numbers
to your program, you could include this snippet in every program you
write.
sub lines_count
{
open IN, "< $0" || die "Can't open file (black magic?)\n";
while( <IN> ) {
chomp;
printf "%3d: %s\n", $., $_;
}
close IN;
}
So, you could type:
perl my_script.pl -e lines_count > something_that_let_you_print.
(Maybe) Useful on system where wc does not exist.
Update Sorry, I've said something wrong.
From perlrun...
-e commandline
may be used to enter one line of script. If -e is
given, Perl will not look for a script filename in
the argument list. Multiple -e commands may be given
to build up a multi-line script. Make sure to use
semicolons where you would in a normal program.
So what you could write is:
perl -e 'while (<>) {chomp; printf "%3d: %s\n", $., $_; }' < some_script > something_that_let_you_print
Sorry :)
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