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Full Discussion: Help me add Error Handling to my script
Top Forums Shell Programming and Scripting Help me add Error Handling to my script Post 302681869 by Don Cragun on Saturday 4th of August 2012 05:38:06 PM
Old 08-04-2012
Code:
wait;ec=$?
if [ "$ec" -ne 0 ]
then
   <do whatever you want to report the error>
else
    <do whatever you want to report successful completion>
fi

If you don't need the unsuccessful exit status of the failed command that you started in the background, you can change:
Code:
wait;ec=$?
if [ "$ec" -ne 0 ]

to:
Code:
if wait

But, as I said before, if the version of rcp you use doesn't reliably set its exit status, you're out of luck trying to determine whether an invocation of rcp succeeded unless you're lucky enough to capture an error message written to stderr.
 

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LEARN ABOUT OPENDARWIN

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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