$_ question

[Sudarsan.Raghavan]

All,

This may be a stupid question. I was going through some online perl
tutorials and they say that $_ is the default input, output and pattern
matching variable.
I tried this out

[suddy@incq231e hash]$ perl
<STDIN>;
if (m/under/) {
        print "Found Under\n";
}
else {
        print "No Match\n";
}
under
No Match

When I tried with <STDIN>  inside while
[suddy@incq231e hash]$ perl
while (<STDIN>) {
        if (m/under/) {
                print "Found Under\n";
        }
        else {
                print "No Match\n";
        }
}
under
Found Under
blunder
Found Under
boom
No Match

What is the reason for this difference in behavior.

Thanks,
Sudarsan



-- 
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]