Re: Terminal hang when bg/fg root shell on OS X

[William Scott <wgscott@chemistry.ucsc.edu>]

You might want to consider this workaround, which has the additional merit
of not requiring the root account to be activated (the default on OS X and
Ubuntu Linux, for security reasons):

Just type

sudo screen zsh

You then get a root shell, and can detach it with control-d, reattach it
when you need it, and so forth.

HTH.

Bill



On Fri, 10 Feb 2006, James F. Hranicky wrote:

> When I background then foreground a root shell on OS X I get
> a terminal error:
>
> 	% 1005 : su -
> 	Password:
> 	# exec zsh
> 	# suspend
>
> 	zsh: suspended  su -
> 	% fg
> 	[1]  + continued  su -
> 	# zsh: suspended (signal)  su -
> 	% <hit return>
> 	#
> 	zsh: error on TTY read: Input/output error
>
> The terminal is hung after this. This doesn't appear to happen
> when suspending a user shell and going back to a root shell.
>
> Anyone have any ideas?
>
> ----------------------------------------------------------------------
> | Jim Hranicky, Senior SysAdmin                   UF/CISE Department |
> | E314D CSE Building                            Phone (352) 392-1499 |
> | jfh@cise.ufl.edu                      http://www.cise.ufl.edu/~jfh |
> ----------------------------------------------------------------------
>