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Full Discussion: Bash case error
Top Forums Shell Programming and Scripting Bash case error Post 303021113 by annacreek on Saturday 4th of August 2018 11:39:46 PM
Old 08-05-2018
Bash case error

Please - this is my FIRST ever attempt on scrip and I just want simple answer if possible.

I am modifying existing and working script.

I just want to and more to it so I started with simple insertion of working code into menu.

I am doing OK, but I cannot figure out why I am executing this line of code

Code:
 esac || whiptail --msgbox "DEBUG ERROR There was an error running option

I understand the "end of case" , but || (or?) does not makes sense to me for now.

I am enclosing PART what I feel is an "problem area"

Code:
    RET=$?
    if [ $RET -eq 1 ]; then
      do_finish
    elif [ $RET -eq 0 ]; then
      if is_pi ; then
        case "$FUN" in
          1\ *) do_change_pass ;;
          2\ *) do_network_menu ;;
          3\ *) do_boot_menu ;;
          4\ *) do_internationalisation_menu ;;
          5\ *) do_interface_menu ;;
          6\ *) do_overclock ;;
          7\ *) do_advanced_menu ;;
          8\ *) do_update ;;
          9\ *) do_about ;;
          10\ *) do_about ;;
          *) whiptail --msgbox "Programmer error: unrecognized option" 20 60 1 ;;
        esac || whiptail --msgbox "DEBUG ERROR There was an error running option $FU$
      else
        case "$FUN" in
          1\ *) do_change_pass ;;
          2\ *) do_network_menu ;;
          3\ *) do_boot_menu ;;
          4\ *) do_internationalisation_menu ;;
          5\ *) do_ssh ;;

I am coding in C/C++ and know about switch / case construct , but I do not understand why duplicating item 9 and inserting it as item 10 is causing this error. It should just run same function as item 9 does.


The "menu" displays OK , but when I select the item 10 I get the DEBUG ERROR message. Is it possible I am getting the "programmer error ..." also but it is getting overridden by the next message?
Help will be much appreciated.
 

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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- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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