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Top Forums Shell Programming and Scripting Can $? return multiple values? Post 302417409 by laloo on Thursday 29th of April 2010 01:07:09 PM
Old 04-29-2010
Java Can $? return multiple values?

Hi,
I have a script which does something like the below:

Code:
execute_some_script.sh $arg1 $arg2 `exec-some-cmd`
if [ $? -eq 0 ] then;
 do something
else
 do something else
fi

However, during some cases, there is an error saying:

line xxx: [: too many arguments

at the line number which has the if statement. The script which is getting called is actually an expect script. Anyway, I am really confused about how its possible for $? to return multiple values. Can someone please help? Smilie
 

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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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