Re: DNScmd in perl script


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Re: DNScmd in perl script

by pc88mxer (Vicar)

on Jul 28, 2008 at 21:12 UTC ( #700647=note: print w/replies, xml )

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in reply to DNScmd in perl script

Technically to only test the status code you should use:

if ($? >> 8) { print "Error " }
[download]

The lower eight bits of $? contain the signal that terminated the process.

There's more info in the perldoc POSIX documentation. In particular, see the documentation for the functions WEXITSTATUS and WIFEXITED.

Note that you shouldn't always trust the status code since it is possible for the command to terminate (like via a signal) before it has a chance to set it.

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Re^2: DNScmd in perl script by ikegami (Patriarch) on Jul 29, 2008 at 08:15 UTC
Technically to only test the status code you should use: But why would he want to ignore other kinds of errors?	[reply]
Re^2: DNScmd in perl script by ajd335 (Novice) on Jul 28, 2008 at 21:23 UTC
Hi , Yes true thing. But the value of $? m getting is -1 all the times...	[reply]
Re^3: DNScmd in perl script by pc88mxer (Vicar) on Jul 28, 2008 at 21:29 UTC
I have a feeling that `dnscmd` is not in your `PATH`. Try printing `$!` and see if it is `No such file or directory`.	[reply] [d/l] [select]
Re^4: DNScmd in perl script by ajd335 (Novice) on Jul 28, 2008 at 21:59 UTC
Hi , yes , It shows No such file or directory...Where I am wrong...	[reply]

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