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UNIX for Dummies Questions & Answers
Script Question
Post 10716 by merlin on Tuesday 20th of November 2001 12:07:27 AM
11-20-2001
Script Question
Hi all,
I'm trying to write a script. Now from the option menu apon startup of the script there will be three selections to pick from. Each selection will only change the start of the script. So I'm trying to write the script for example:
if choice 1 is selected then it'll copy hosts table.
if choice 2 is selected then it'll say setup a new user.
if choice 3 is selected then say it'll delete a user.
(Only examples not what I want to do)
Main problem I am coming across though is I need it to break out of the "$choice" after it has done what it is meant to and keep going with the bulk of the script because it's only a few different things that will change, thus three options.
I've tried the break command and it doesn't work it breaks out of the script altogether
Also tried various things with break like 'breaksw' and so on.
So if anyone has any idea how I can let the "$choice" do what it has to do then break out of that $choice and keep on going with the rest of the script. Thanks in advanced.
I would perfer somewhere to which I can find text on this so I can learn it myself and hopefully get it right, but if you don't know where text can be found only an answer.
Thanks in Advanced.
I'm trying to write a script. Now from the option menu apon startup of the script there will be three selections to pick from. Each selection will only change the start of the script. So I'm trying to write the script for example:
if choice 1 is selected then it'll copy hosts table.
if choice 2 is selected then it'll say setup a new user.
if choice 3 is selected then say it'll delete a user.
(Only examples not what I want to do)
Main problem I am coming across though is I need it to break out of the "$choice" after it has done what it is meant to and keep going with the bulk of the script because it's only a few different things that will change, thus three options.
I've tried the break command and it doesn't work it breaks out of the script altogether
Also tried various things with break like 'breaksw' and so on.So if anyone has any idea how I can let the "$choice" do what it has to do then break out of that $choice and keep on going with the rest of the script. Thanks in advanced.
I would perfer somewhere to which I can find text on this so I can learn it myself and hopefully get it right, but if you don't know where text can be found only an answer.
Thanks in Advanced.
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LEARN ABOUT DEBIAN
tcl_allowexceptions
Tcl_AllowExceptions(3tcl) Tcl Library Procedures Tcl_AllowExceptions(3tcl) __________________________________________________________________________________________________________________________________________________ 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(3tcl)