R. Joseph Newton wrote: > 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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