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From: Borzenkov Andrey <Andrey.Borzenkov@siemens.com>
To: dominik.vogt@gmx.de, "'Zsh Users'" <zsh-users@sunsite.dk>
Subject: RE: copying files with shell built in functions?
Date: Fri, 28 Mar 2003 20:30:18 +0300
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> In a fit of mental derangement, my colleagues tried to exchange
> the libc on a machine at run time and used 'mv' to rename the
> file.  As you might imagine, they regretted that immediately :-)
> 
> Can anyone think of a way to copy or rename a file with only shell
> built in functions?  (either zsh or bash)  I have tried things
> like
> 
>   $ while read <options> X; do echo <options> "$X"; done < ifile > ofile
> 
> and
> 
>   $ echo $(< ifile) > ofile
> 
> (does not work because echo destroys XR and LF)
> 
> or
> 
>   $ cat <<EOF > ofile
>   $(< ifile)
>   EOF
> 
> (does not work because it still needs a cat and the here document
> is mangled.
> 

bor@itsrm2% zmodload zsh/files
bor@itsrm2% which mv
mv: shell built-in command
bor@itsrm2% which rm
rm: shell built-in command
bor@itsrm2% man zshmodules
bor@itsrm2% echo $ZSH_VERSION
4.0.4

-andrey