A program that uses the $< variable. : Special Variables « Language Basics « Perl






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  3. Special Variables

A program that uses the $< variable.

   
#!/usr/local/bin/perl 

($username) = getpwuid($<); 
print ("Hello, $username!\n");








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35.$" is the separator
36.$# is the default format
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38.$MATCH = $&
39.$SIG{__DIE__}
40.$SIG{__WARN__} = 'IGNORE';
41.$SIG{__WARN__} = sub {die "Warning: $_[0]"};
42.$\ is 'END_OF_OUTPUT'
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44.$^O stores the name of the operating system
45.$^S: is inside eval
46.$^W: Check the '-w switch'
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48.$_ for print function
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