Could someone explain what's going on here?
my @trace = split("\s",(`traceroute -w 2 -q 1 -i dmfe0 $ip_address`));
my @trace_out = "";
foreach (@trace){
$_ =~ s/\n//;
if ( $_ =~ /some|checks|here/ ){
@trace_out = (split /\s+/, $_ );
}
}
and
open EXE, qq{/usr/sbin/traceroute -q 1 -w 2 -i dmfe0 $ip_address |};
my @trace = <EXE>;
my @trace_out = "";
foreach (@trace){
$_ =~ s/\n//;
if ( $_ =~ /some|checks|here/ ){
@trace_out = (split /\s+/, $_ );
}
}
Both work, however, when I use the first I have one server that apparently has hidden characters that would cause the the line to split prematurely. I expect the problem is in the split() in the foreach, but since the open EXE works just fine I'm going with that anyway. Just curious.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.