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Full Discussion: Pass argument to function
Top Forums UNIX for Dummies Questions & Answers Pass argument to function Post 302113639 by Knotty on Sunday 8th of April 2007 08:14:17 AM
Old 04-08-2007
Pass argument to function

Hi,
Can someone please explain to me how I can get a function to recognize a file given as an argument to a script.

Suppose the script has the argument as follows:

sh script file

and the function is as follows:
function display_file () {
cat $1
}

and it s then called
#main program
display_file

I find that the only way that I can get the file into the function is to make a copy in the main program like so:
cp $1 temp

I have read some lit on functions but haven't come accross this type of problem as far.

Thanks in advance,
Knotty.
 

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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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