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Top Forums Shell Programming and Scripting Read statement not working in a script Post 302384659 by sumitdua on Wednesday 6th of January 2010 04:25:20 AM
Old 01-06-2010
hi Anjan1
have u tried executing the code in the same way as i have described. bcoz if you execute it directly it works fine but if you do it as i have tod its giving problem.
try it in this wway
make i file 1.sh having content

cat $1 | while read LINE
arg=`echo $LINE | cut -f 1 -d' '`
if [ $arg = 'Run' ]
then
cat $arg | while read LINE1
arg1= `echo $LINE1 | cut -f 1 -d' '`
if [ $arg1 = 'Suspend' ]
then
sh halt.sh
fi
fi

make a file a having content
Run Pause

Make a file Pause having content
Suspend

now execute
1.sh a
 

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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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