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Full Discussion: Shell script menu problem
Top Forums Shell Programming and Scripting Shell script menu problem Post 302598825 by in2nix4life on Wednesday 15th of February 2012 01:56:57 PM
Old 02-15-2012
Here's a long-winded way that may help point you in the right direction by putting the menus in functions:

Code:
#!/bin/bash


function main_menu()
{
    while :
    do
        echo
        echo "MAIN MENU"
        echo
        echo "1. Main Menu Option 1"
        echo "2. Main Menu Option 2"
        echo "3. Main Menu Option 3 To Sub-Menu"
        echo "4. Main Menu Option 4 To Quit"
        echo
        read -p "Choice: " m_choice
        echo
        
        case "$m_choice" in 
            1)  echo "Main Menu Option 1"
                echo
                ;;
            2)  echo "Main Menu Option 2"
                echo
                ;;
            3)  sub_menu
                ;;
            4)  exit 0
                ;;
            *)  echo "Bad Option"
                echo
                ;;
        esac
    done
}

function sub_menu()
{
    while :
    do
        echo
        echo "SUB MENU"
        echo
        echo "1. Sub-Menu Option 1"
        echo "2. Sub-Menu Option 2"
        echo "3. Sub-Menu Option 3 Back To Main Menu"
        read -p "Choice: " s_choice
        echo

        case "$s_choice" in
            1)  echo "Sub-Menu Option 1"
                echo
                ;;
            2)  echo "Sub-Menu Option 2"
                echo
                ;;
            3)  main_menu
                ;;
            *)  echo "Bad Option"
                echo
                ;;
        esac
    done
}

main_menu

exit 0

Hope this helps.
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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