I wrote a simple script like this :
#!/usr/bin/perl
if (($ARGV[0] eq "") && ($ARGV[1] eq "") && ($ARGV[2] eg "")) {
print "You must give me 3 parameters\n";
exit;
}
Then, I tested like with 1 .. OR 2 ... OR 3 parameters, it did not print the text "You
must...".
Why this happened? How to detect "null" parameters? is "" equal to "null"?
I can use "if (scalar(@ARGV) < 3) {...}" but that not the case.
Thanks for help me to explain this.
newbie
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