06-03-2014
That's why I explained how I interpreted the original post, but you're right, I was not clear enough.
I assumed that the third party tool issues
rm -rf /* if the user of that tool does not provide any arguments. ONLY this case is catched. The user of that tool may not have any knowledge that he is working on an UNIX system at all because he only sees that tools frontend and may not know what effect is caused by not giving any arguments.
For all other cases I'll quote you:
Quote:
Originally Posted by Don Cragun
UNIX utilities are there to help you get a job done. If you use them correctly, they can do wonderful things for you. If you tell them to do stupid things, you'll get what you asked for.
A user who issues the commands you mentioned in the last reply most likely knows what he is doing - that would not be an accidental use of the rm command.
Edit again: thanks for pointing out the issues in your last paragraph.
In my tests (using GNU bash, version 4.1.5(1)-release (x86_64-pc-linux-gnu)) the script compains correctly when there are files in the root directory that contain space or tab characters in their names.
I'm not sure if the race condition can be entirely avoided (given my assumtions about the problem are correct).
The issue with whitespaces in the operand list is caused by my lack of quoting. The last line should read
/bin/rm "$@".
Last edited by cero; 06-03-2014 at 08:26 AM..
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LEARN ABOUT OSX
page_util_quote
page_util_quote(n) Parser generator tools page_util_quote(n)
__________________________________________________________________________________________________________________________________________________
NAME
page_util_quote - page character quoting utilities
SYNOPSIS
package require page::util::quote ?0.1?
package require snit
::page::util::quote::unquote char
::page::util::quote::quote'tcl char
::page::util::quote::quote'tclstr char
::page::util::quote::quote'tclcom char
_________________________________________________________________
DESCRIPTION
This package provides a few utility commands to convert characters into various forms.
API
::page::util::quote::unquote char
A character, as stored in an abstract syntax tree by a PEG processor (See the packages grammar::peg::interpreter, grammar::me, and
their relations), i.e. in some quoted form, is converted into the equivalent Tcl character. The character is returned as the result
of the command.
::page::util::quote::quote'tcl char
This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser, will
regenerate the character in question and is 7bit ASCII. The string is returned as the result of this command.
::page::util::quote::quote'tclstr char
This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser and
will generate a human readable representation of the character in question. The string is returned as the result of this command.
The string does not use any unprintable characters. It may use backslash-quoting. High UTF characters are quoted to avoid problems
with the still prevalent ascii terminals. It is assumed that the string will be used in a double-quoted environment.
::page::util::quote::quote'tclcom char
This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser when
used within a Tcl comment. The string is returned as the result of this command.
BUGS, IDEAS, FEEDBACK
This document, will undoubtedly contain bugs and other problems. Please report such in the category page of the Tcllib SF Trackers
[http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have.
KEYWORDS
page, parser generator, quoting, text processing
CATEGORY
Page Parser Generator
COPYRIGHT
Copyright (c) 2007 Andreas Kupries <andreas_kupries@users.sourceforge.net>
page 1.0 page_util_quote(n)