On 1/4/11 12:33 AM, Sunita Rani Pradhan wrote:
Perl script works without the first line ( perl Interpreter
: #! /usr/bin/perl) . What is the real use of this line ? This line does
not through any error on Windows where , this path does not exist .
On Unix, it allows you to run your script with just the scripts filename
rather than running the interpreter and passing the filename as an
argument. "./myscript" instead of "perl myscript".
On Windows, that line is just a comment. Neither the operating system
nor the interpreter does anything with it. To run a script with just
the name, you need to use a file extension associated with the Perl
interpreter. The standard extension is ".pl", though in principle you
could use something else. If you don't have corporate overlords forcing
you to use something else, just use ".pl".
I would, however, recommend that you use the "#!/usr/bin/perl" line even
on Windows. It will make things a little easier if you have to move the
script over to a Unix like system. It won't cause any problems in
windows, it will just get skipped right over.
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