Re: cp command potental problem

[Bauke Jan Douma]

Eric Blake wrote on 06/17/2009 08:43 PM:
> According to Bob Proulx on 6/17/2009 11:12 AM:
> > If there are three program arguments then the last one must be a
> > directory or it is an error.  But with only two it isn't possible to
> > determine the caller's intention.
>
> It is also possible to write shell functions or aliases so that you can
> avoid some of these mistakes.  For example:
>
> $ alias safe_copy='cp -n'
> $ safe_copy file*.txt

~/tmp > touch foo bar
~/tmp > cp -n foo bar
cp: invalid option -- 'n'
Try `cp --help' for more information.
~/tmp > cp --version
cp (GNU coreutils) 6.10
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Torbjorn Granlund, David MacKenzie, and Jim Meyering.


bjd