help me please

[Anonymous Monk]

My lecturers in their infinite wisdom have decided to leave out of the textbook how to use command-line options... I need to do the following: specify a file on the command-line to open and use in the script... if anybody can help me, my e-mail is [e-mail] thanx in advance

[cjf]

A quick super search provides two very similarly named, possibly relevant nodes:

• Command Line Options
• command line options

Let me know if that's not what you're looking for :).

[Anonymous Monk]

it's me again... it seems like my e-mail is on the blink... just post it here... James

[BUU]

/me hopes hes not violating any monastery standards.. everything on the command line is automagically placed into the @argv array, split on spaces. moreoever, the diamond operator automagicaly reads from the first arguement in the argv array (or something like that.. go look it up)

[mirod]

That would actually be the @ARGV array.

#!/usr/bin/perl -w
use strict;

my $filename= shift @ARGV;
....

As BUU mentionned <> works automagically: you can call the following script with perl test.pl my_file

#!/usr/bin/perl -w
use strict;

while( <>)
  { # reads from my_file
    ...
  }