Hello Monks,

I have written a script to get the offset valu on a solaris machine. and below is code:

#!/usr/bin/perl
use strict;
use warnings;

my $cmd = "/usr/sbin/ntpq -p";
my @ntpout = grep (/^\*/, `$cmd`);  # grep line starting with * sign a
+nd put into an array

my $file = 'offset.txt';

open (my $fh, '>' $file) or die "Could not open file '$file' $!";
print $fh "@ntpout\n">
close $fh;    # Written array output into file

my $offset = `cat offset.txt | awk '{print $9}'`; # here expecting 9th
+ cloumn value in variable $offset

print "$offset \n";

[download]

raw output of $cmd is:


     remote           refid      st t when poll reach   delay   offset
+    disp
======================================================================
+========
 LOCAL(0)        LOCAL(0)        10 l   34   64  377     0.00    0.000
+   10.01
*gpstime.domain.l .PPS.            1 u  879 1024  377     1.85   -0.02
+5    0.03
 hitman.domain.lo 0.0.0.0         16 -    - 1024    0     0.00    0.00
+0 16000.0

[download]

when i run command "cat offset.txt | awk '{print $9}'"outside of script it gives me exactly "-0.025" but when i debug the script and added a watch for $offset i see it returns "*gpstime.domain.l .PPS. 1 u 879 1024 377 1.85 -0.025 0.03"

What wrong i am doing? -KAKA-

In reply to using Backtick inside perl gives different output by kaka_2

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