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Full Discussion: return code help
Top Forums Shell Programming and Scripting return code help Post 302286132 by learnbash on Tuesday 10th of February 2009 11:36:15 AM
Old 02-10-2009
Quote:
Originally Posted by vgersh99
Code:
bash-2.05$ ls foo
foo: No such file or directory
bash-2.05$ echo $?
2


Hello,

thanks for your reply, but i want to replace only true output to "1", ls always return "0" how could i replace only ls command output to "1".

Thanks,
Bash
 

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LEARN ABOUT OSX

idebug

idebug(n)																 idebug(n)

__________________________________________________________________________________________________________________________________________________

NAME

       idebug - Interactive debugging environment in TkCon

SYNOPSIS

       idebug body ?level?

       idebug break ?id?

       idebug {echo ?id?} ?args?

       idebug id ?id?

       idebug off

       idebug on ?id?

       idebug {puts ?id?} args

       idebug show type ?level? ?VERBOSE?

       idebug trace ?level?

_________________________________________________________________

DESCRIPTION

       The  idebug  command provides an interactive debugging environment for procedures via TkCon.  You can place idebug break commands into your
       procedure to create breakpoints.  It will pop up the TkCon console and put you into a "debugging" mode.	The body, show & trace methods are
       intended for internal use only.	This procedure works for minimal debugging sessions.  Comments are encouraged.

       idebug body ?level?
	      Prints out the body of the command (if it is a procedure) at the specified level.  level defaults to the current level.

       idebug break ?id?
	      Creates  a breakpoint within a procedure.  This will only trigger if idebug is on and the id matches the pattern.  If so, TkCon will
	      pop to the front with the prompt changed to an idebug prompt.  You are given  the  basic	ability  to  observe  the  call  stack	an
	      query/set  variables  or execute Tcl commands at any level.  A separate history is maintained in debugging mode.	To see the special
	      commands available at the debug prompt, type ? and hit return.

       idebug {echo ?id?} ?args?
	      Behaves just like echo, but only triggers when idebug is on.  You can specify an optional id to further restrict triggering.  If	no
	      id is specified, it defaults to the name of the command in which the call was made.

       idebug id ?id?
	      Query  or set the idebug id.  This id is used by other idebug methods to determine if they should trigger or not.  The idebug id can
	      be a glob pattern and defaults to *.

       idebug off
	      Turns idebug off.

       idebug on ?id?
	      Turns idebug on.	If id is specified, it sets the id to it.

       idebug {puts ?id?} args
	      Behaves just like puts, but only triggers when idebug is on.  You can specify an optional id to further restrict triggering.  If	no
	      id is specified, it defaults to the name of the command in which the call was made.

       idebug show type ?level? ?VERBOSE?
	      type  must  be  one of vars, locals or globals.  This method will output the variables/locals/globals present in a particular level.
	      If VERBOSE is added, then it actually dumps out the values as well.  level defaults to the level in which this method was called.

       idebug trace ?level?
	      Prints out the stack trace from the specified level up to the top level.	level defaults to the current level.

SEE ALSO

       dump(n), observe(n), tkcon(1), tkcon(n), tkconrc(5)

KEYWORDS

       Tk, console, debug

COPYRIGHT

       Copyright (c) Jeffrey Hobbs <jeff at hobbs.org>

TkCon									2.5								 idebug(n)
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