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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LEARN ABOUT CENTOS

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do rtl layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter, a4. Default is A4.

       --bottom-margin=bm
	      Set bottom margin in postscript points (1/72 inch). Default is 36.

       --top-margin=tm
	      Set top margin. Default is 36.

       --left-margin=lm
	      Set left margin. Default is 36.

       --right-margin=rm
	      Set right margin. Default is 36.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --encoding=ENCODING
	      Assume the documentation encoding is ENCODING.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)