bash read within function with arguments Post: 302553726

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Top Forums Shell Programming and Scripting bash read within function with arguments Post 302553726 by serverchief on Thursday 8th of September 2011 11:22:49 AM

09-08-2011

Registered User

Hi Corona,

Thanks for the help, i got it to work and decided to take it step further. I'm hoping you would know what i'm doing wrong.

I would like for the user to be prompted, but if value for variable exists, display it in brackets and if user presses enter without modifying the string, the same value is used for that variable. However, in my attempt to headlock $1=$var within function and if/else statement fail with "command not found".

Output
IPADDRESS: [testhost1]
./main.sh: line 23: DHCPIPADDRESS=testhost1: command not found

My code (i begin adding tempvars in attempt to debug and resolve the issue, but havenot had much luck)

Code:

function settings_verify_entry(){
        if [ ! -z "${!1}" ]
        then
                        tempvar3="${!1}"
                        read -p "$2: ["${!1}"] " $1
                        tempvar=$1
                        if [ -z "${!tempvar}" ]
                                then
                                "$1"="$tempvar3"
                        fi
        else
                        while [ -z "${!1}" ]
                                do
                                       read -p "$2: " $1
                                done
        fi
}

Also, i'd like to fill the gap in this area, what is this concept called and where would i find more details on it? My basic google search did not yield any results, but i'm guessing my keywords arent correct.

Once again thanks

-ilya

serverchief

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LEARN ABOUT SUSE

command-not-found

COMMAND-NOT-FOUND(1)					    http://en.opensuse.org/Sco					      COMMAND-NOT-FOUND(1)

NAME

       command-not-found - A command-not-found handler

SYNOPSIS

       command-not-found {binary_name} {repository}

ARGUMENTS

       The following arguments are required:

       binary_name
	   The name of binary you are looking for.

       repository
	   The name of repository for search. For most cases, use zypp

DESCRIPTION

       command-not-found handler is designed to tell users which package contains a missing command.

       The handler is integrated to bash(1) and zsh(1) shells and is not necessary to call it directly. Just type a name of the command in your
       favourite shell and you'll get a result.

       If you consider c-n-f handler useless, just add unset command_not_found_handle to your profile or remove the command-not-found package.

       Handler doesn't call the command-not-found binary directly, it only prints info about it. If you want to invoke it automatically, just add
       export COMMAND_NOT_FOUND_AUTO=1 to your bash profile.

EXAMPLE
: NORMAL USAGE
       For example you want to try blender, because you have heard that is an amazing program. So just type blender in shell:

	   $ blender

       You get the following output:

	   The program 'blender' can be found in the following package:
	     * blender [ path: /usr/bin/blender, repository: zypp (openSUSE 11.1-0) ]

	   Try installing with:
	       sudo zypper install blender

	   bash: blender: command not found

SEE ALSO

       scout(1)

AUTHOR

       Pavol Rusnak <stick@gk2.sk>
	   Developer

http://gitorious.org/opensus					    08/07/2009						      COMMAND-NOT-FOUND(1)

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