Shell Programming and Scripting

Hi,
Can someone please tell me how to run a perl file in unix.
for instance, I have one file or perl script saved as perl.pl and i have one text file and i want to run .pl file on .txt file.what should i do?

Thanks

You feed your Perl script to the "perl" interpreter in order to run it.

Code:

perl myfile.pl

where myfile.pl is your text file that contains Perl code.

Alternatively, if your Perl script has the shebang in the first line -

Code:

#!<path_to_perl_on_your_system>

and you have executable permission on your script, then you can simply invoke your script as -

Code:

myfile.pl

or

./myfile.pl

depending on whether or not you have the current directory (".") in your PATH variable.

I'll assume "to run .pl file on .txt file" means that you want your Perl script to process your text file.
Quite simply, you'd code something like this -

Code:

open (IN, "myfile.txt") or die "Can't open myfile.txt: $!";
while (<IN>) {
  # do whatever you want to do with the current record
  # the "while" loop iterates through one record at a time
}
# good practice to clean up after you're done
close (IN) or die "Can't close myfile.txt: $!";

HTH,
tyler_durden

You can also run perl's one liner script using perl command with -e option
Example:

Code:

perl -e 'print "hello world\n"'