Count script wrapper help Post: 302312288

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Top Forums Shell Programming and Scripting Count script wrapper help Post 302312288 by durden_tyler on Thursday 30th of April 2009 09:54:27 PM

04-30-2009

Registered User

Quote:

Originally Posted by richsark

...
Error 48: This subnet does not exist.
10.2.0.0
getobjectlst.exe :10.2.0.0: Error code = 48
Use of uninitialized value $dnsoptions[0] in pattern match (m//) at update-enhan.pl line 23, <$in> line 3

A couple of points here:

(1) I think the error is being thrown because the list @dnsoptions is undefined, i.e. the executable "getobjeclst.exe" probably returns a zero-length string in some cases.

(2) Again, it's quite possible that the output of "getobjectlst.exe" is something like this:

HTML Code:


Error 48: This subnet does not exist.
146.149.0.0
getobjectlst.exe :146.149.0.0: Error code = 48

i.e. the first line could be blank. In such a case, $dnsoptions[0] would be equal to "\n". Hence a comparison like this:

Code:

  if ($dnsoptions[0] =~ /Error 48: This subnet does not exist./) {

would fail, because the string "Error 48: This subnet does not exist." is in $dnsoptions[1], or maybe in $dnsoptions[2] etc.

(3) The logic you explained is as follows:

(a) take a subnet from "m-names2.txt", and pass it to "getobjectlst.exe"
(b) if an error is thrown, pass that subnet to "getsubnetlst.exe".
(c) loop through the output of "getsubnetlst.exe", pick the 2nd token, and call "getobjectlst.exe" with that as parameter.

Now, what if "getsubnetlst.exe" itself fails, or returns a null string ? The current script does not take care of that scenario.

======================================================

For problem # (1) above, I assume you just want to iterate to the next subnet value, maybe after printing an error message.

For problem # (2) above, you'll need to see if the string "Error 48: This subnet does not exist." occurs in any element of the list @dnsoptions (and not just in $dnsoptions[0]). You could join all elements of the list into a single string, and check for the occurrence of that error message in that string.

So the modification for (1) and (2) is as follows:

Code:

  ...
  if (not defined($dnsoptions[0])) {
    print "dnsoptions is null or undefined, going on to the next subnet\n";
    next;
  }
  if (join(" ",@dnsoptions) =~ /Error 48: This subnet does not exist./) {
  ...

HTH,
tyler_durden

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME

     atf-sh [-s shell] -- interpreter for shell-based test programs

SYNOPSIS

     atf-sh script

DESCRIPTION

     atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library.

     atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL.  atf-sh executes the inter-
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EXAMPLES

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SEE ALSO

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