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Building a dynamic UNIX menu with input files

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Top Forums Shell Programming and Scripting Building a dynamic UNIX menu with input files
# 8  
Old 10-07-2016
Hello Don,

Thanks for the comments.
Quote:
Is there some other issue with break that has caused you problems?
I'm sure that break works exactly as designed, but I would guess my incompetence in keeping track of how many loops are in play is the reason, especially as code evolves and I add a loop round a section existing code. I remember to complete the indenting to help, but if I don't increment the break statement I don't step out where I was expecting to.

Like I say, I try to avoid it because I get it working then make a mess of it later. I'm not sure if using break for other loops is good programming practise or not, but I try to loop on clear conditions rather than just jump out part way through.



Kind regards,
Robin
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LEARN ABOUT OPENSOLARIS

break

break(1T)						       Tcl Built-In Commands							 break(1T)

__________________________________________________________________________________________________________________________________________________

NAME

       break - Abort looping command

SYNOPSIS

       break
_________________________________________________________________

DESCRIPTION

       This command is typically invoked inside the body of a looping command such as for or foreach or while.	It returns a TCL_BREAK code, which
       causes a break exception to occur.  The exception causes the current script to be aborted out to the  innermost	containing  loop  command,
       which  then aborts its execution and returns normally.  Break exceptions are also handled in a few other situations, such as the catch com-
       mand, Tk event bindings, and the outermost scripts of procedure bodies.

EXAMPLE

       Print a line for each of the integers from 0 to 5:
	      for {set x 0} {$x<10} {incr x} {
		 if {$x > 5} {
		    break
		 }
		 puts "x is $x"
	      }

SEE ALSO

       catch(1T), continue(1T), for(1T), foreach(1T), return(1T), while(1T)

KEYWORDS

       abort, break, loop

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWTcl	      |
       +--------------------+-----------------+
       |Interface Stability | Uncommitted     |
       +--------------------+-----------------+
NOTES

       Source for Tcl is available on http://opensolaris.org.

Tcl																	 break(1T)