Thanks for your feedback.
--
Hugo
> @{builtin cd $1 && tar cf /fd/1 .} | @{builtin cd $2 && tar xTf /fd/0}
the /fd/1 and /fd/0 fererences ensure that dircp will work with ape's tar
which doesn't read/write stdin/stdout by default like plan9's does.
-Steve
On Fri, Oct 16, 2009 at 8:58 AM, hugo rivera wrote:
> I am having a hard time understanding the dircp script and the dup(3)
> device. What's exactly the purpose of writing
> @{builtin cd $1 && tar cf /fd/1 .} | @{builtin cd $2 && tar xTf /fd/0}
> instead of
> {builtin cd $1 && tar c .} | {builtin
> @{builtin cd $1 && tar cf /fd/1 .} | @{builtin cd $2 && tar xTf /fd/0}
> instead of
> {builtin cd $1 && tar c .} | {builtin cd $2 && tar xT}
consider,
; one=/bin; two=/tmp; cd /
; @{builtin cd $one} | @{builtin cd $two} ; pwd
/
; {builtin cd $one} | {builtin cd $t
