How do properties effect script? Post: 302077318

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Top Forums UNIX for Dummies Questions & Answers How do properties effect script? Post 302077318 by blowtorch on Wednesday 21st of June 2006 06:23:11 AM

06-21-2006

Registered User

To be honest, I was surprised to find that the -f and -i options work together. But on checking the man page (on HP and Sun), I found the following:
On HP-UX:

HTML Code:

rm recognizes the following options:

           -f   Force each file or directory to be removed without prompting
                for confirmation, regardless of the permissions of the
                entry.  This option also suppresses diagnostic messages
                regarding nonexistent operands.

                This option does not suppress any diagnostic messages other
                than those regarding nonexistent operands.  To suppress all
                error message and interactive prompts, the -f option should
                be used while redirecting standard error output to
                /dev/null.

                This option ignores any previous occurrence of the -i
                option.

 Hewlett-Packard Company            - 1 -   HP-UX Release 11i: November 2000

 rm(1)                                                                 rm(1)

           -i   Write a prompt to standard error requesting confirmation
                before removing each entry.

On Solaris:

HTML Code:

    -f    Removes all files (whether write-protected or not)  in
           a  directory  without  prompting the user. In a write-
           protected directory, however, files are never  removed
           (whatever  their permissions are), but no messages are
           displayed. If the removal of a write-protected  direc-
           tory  is  attempted,  this option will not suppress an
           error message.

     -i    Interactive. With this option, rm prompts for  confir-
           mation  before removing any files. It overrides the -f
           option and remains in  effect  even  if  the  standard
           input is not a terminal.

So if you run "rm -fi" on HP, it is interactive, but "rm -if" is forced as specified in the man page. But on Solaris, if "-i" is specified, then the "-f" is ignored regardless of where it occurs.

blowtorch

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LEARN ABOUT OSX

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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