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  1. or download this
    use strict;
use warnings; 
...
    }
} #Restore $^I and @ARGV to the values they had before the block
  2. or download this
        while(my $line = $INFILE)
  3. or download this
    {
    local $^I = "";
...


}
  4. or download this
    ~/pperl_programs$ cat data.txt
DEVICE=eth0
...
IPADDR=10.9.0.200
NETMASK=255.255.0.0
GATEWAY=10.9.1.254