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Full Discussion: How to return programming to calling shell script?
Top Forums Shell Programming and Scripting How to return programming to calling shell script? Post 302791403 by [MA]Flying_Meat on Monday 8th of April 2013 01:13:18 PM
Old 04-08-2013
Does your calling script do anything after the script call?

What happens (as far as we can tell) is:
Main script calls script 2
Script 2
preforms action
exit 0 (success)
Main script can get return status (exit 0) of the called script
Main script either performs other tasks below your task selection code (if there are any) or exits.

You can use the exit status of the called script to take additional actions in the calling script.

Shell scripting tends to be pretty linear in that when one command completes, the next will start. Running another script, from the perspective of your main script is just like any other command.
The task selection code you provided only allows for one task selection, then it is done.

If your intention is to remain in the main script's task selection code, then you need to write a loop around the task selection code and add an exit item to your task selection code.

As stated by Corona688, removing the exec leaves your main script running, and the command to run a second script returns as expected. What happens then is up to the code in the main script.
This User Gave Thanks to [MA]Flying_Meat For This Post:
PTL
 

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LEARN ABOUT MOJAVE

tcl_allowexceptions

Tcl_AllowExceptions(3)					      Tcl Library Procedures					    Tcl_AllowExceptions(3)

__________________________________________________________________________________________________________________________________________________

NAME

       Tcl_AllowExceptions - allow all exceptions in next script evaluation

SYNOPSIS

       #include <tcl.h>

       Tcl_AllowExceptions(interp)

ARGUMENTS

       Tcl_Interp *interp (in)		Interpreter in which script will be evaluated.
_________________________________________________________________

DESCRIPTION

       If  a  script is evaluated at top-level (i.e. no other scripts are pending evaluation when the script is invoked), and if the script termi-
       nates with a completion code other than TCL_OK, TCL_ERROR or TCL_RETURN, then Tcl normally converts this into a TCL_ERROR  return  with	an
       appropriate  message.  The particular script evaluation procedures of Tcl that act in the manner are Tcl_EvalObjEx, Tcl_EvalObjv, Tcl_Eval,
       Tcl_EvalEx, Tcl_GlobalEval, Tcl_GlobalEvalObj, Tcl_VarEval and Tcl_VarEvalVA.

       However, if Tcl_AllowExceptions is invoked immediately before calling one of those a procedures, then arbitrary completion codes  are  per-
       mitted from the script, and they are returned without modification.  This is useful in cases where the caller can deal with exceptions such
       as TCL_BREAK or TCL_CONTINUE in a meaningful way.

KEYWORDS

       continue, break, exception, interpreter

Tcl									7.4						    Tcl_AllowExceptions(3)
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