[Pbuilder-maint] Bug#439285: Bug#439285: pbuilder login does not create a login shell

[Ben Hutchings]

On Fri, 2007-08-24 at 08:07 +0900, Junichi Uekawa wrote:
> Hi,
> 
> > pbuilder login does:
> > 
> > 	${CHROOTEXEC} bin/bash
> > 
> > This starts bash as a normal interactive shell, not a login shell.
> > This means that it can, for example, be suspended, with unpleasant
> > results.  bash's exec command allows setting the invoked program's 0th
> > argument with the -a option, so it would be possible to start a login
> > shell with:
> > 
> >         (${CHROOTEXEC} bin/bash -c 'exec -a -bash bin/bash')
> 
> Hmm.. is adding '--login' option not enough?

The use of the "-" prefix is more general so if you wanted to support
alternate login shells in future you could use something like:

        (${CHROOTEXEC} bin/bash -c "exec -a -$SHELL $SHELL")

But so long as pbuilder always runs bash, the --login option would be
more understandable.

Ben.

-- 
Ben Hutchings
All extremists should be taken out and shot.
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