Function Returns Post: 302979346

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Top Forums Shell Programming and Scripting Function Returns Post 302979346 by akechnie on Friday 12th of August 2016 04:01:21 PM

08-12-2016

Registered User

Quote:

, you have the logical error that the "command substitution" will replace the function with its output to stdout while the (exit) code conveyed by the return command can be retrieved in the $? parameter.

Thanks so much, and just so I understand your quote above. Does this mean that the $zone value I'm returning from the function set_region will just be wiped out everytime?

Also does this look better for the if statement, I'm not sure if || means or, because I'm only looking for those numbers?

Code:

if [$zone eq 4] || [$zone eq 5] || [$zone eq 6] || [$zone eq 7] || [$zone eq 10] || [$zone eq 11] || [$zone eq 20] || [$zone eq 21] || [$zone eq 23] || [$zone eq 25]
then
                        $zonecheck=1
                else
                        echo "That's not a region\n"
                fi

---------- Post updated at 04:01 PM ---------- Previous update was at 03:31 PM ----------

Now it just hangs and throws the same error when you hit enter.

Using comments might be easier for me to explain what I'm trying to do:

#A function to call another function to get a user to enter a valid region in a variable
#Use that variable in another command
#Print out the results from the command

#A function for getting the users region and making sure it's in a valid list
#Request the user input a region and get it in a variable
#A while loop that keep going as long as the user input doesn't match a valid region
#A for loop to test the user input against the valid regions
#Matching with a valid region exit the while loop
#Not matching rerun through the while loop
#Return the zone that was found to be valid

Last edited by akechnie; 08-12-2016 at 05:09 PM..

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named-checkzone

named-checkzone(1)					      General Commands Manual						named-checkzone(1)

NAME

       named-checkzone - zone validity checking tool

SYNOPSIS

       class] mode] mode] outfile] directory] directory] zonename [filename]

DESCRIPTION

       is a tool for performing integrity checks on the zone contents.	It uses the same integrity checks as the daemon when loading a zone.  This
       makes useful for checking zone files before configuring them into a name server.  Zones and zone files are described in named.conf(4).

   Options
       Specify the class of the zone.

       Dump the zone file in canonical format.

       Enable debugging.

       Read the journal (if it exists) when loading the zone file.

       Perform	 checks with the specified failure mode.  Possible modes are (default), and The option is described in named.conf(4).

       Specify whether NS records should be checked to see if they are addresses.
		 Possible modes are (default), and

       Write zone output to
		 outfile .

       Enable quiet mode for exit code only.

       Print the version of
		 and exit.

       Change to directory (see chdir(2)) so that relative file names in master file directives work This is similar to the clause in

   Operands
       filename  The file to use for checking the zone contents.  The default is the file with the zone name.  For the default to work,  the  file
		 name for the zone in the statement of the file must be identical to the zone name.

       zonename  The zone whose contents are to be checked.

RETURN VALUE

       sets the exit status to:

	      Success.

	      Errors were detected.

EXAMPLES

       To perform integrity checks on zone in the zone file and display debug information:

AUTHOR

       was developed by the Internet Systems Consortium (ISC).

SEE ALSO

       named(1M), chdir(2), named.conf(4).

       Requests for Comments (RFC): 1035, available online at

       available online at

       available from the Internet Systems Consortium at

								     BIND 9.3							named-checkzone(1)