Mark VanMiddlesworth wrote:
> this is a script that systematically pings every host on the network,
> and writes the output to the screen. If the -n arg is specified, it
> will also write to a disk. What's wrong with the syntax, especially
> line 12?
Why am I supposed to count to line 12, instead of you marking it?
> #!/usr/bin/env perl
>
> $x = 1;
> $b = 0;
> for ($x = 1; $x < 256; $x++) {
> $a = `ping -q -c 1 192.168.1.$b`;
> $b += 1;
> print "192.168.1.$b ";
> print $a;
> $usage="ping.pl [-n]"
> if ($arg = "-n") {$e = 0} # Line 12
You are asking, in the line above, whether your assignment of "-n" to the scalar $arg
succeeded. Answer: true, always.
Joseph
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