ssh argv[0] support

[Nicolas Williams]

Why would you want this feature anyways???

It doesn't scale, for one, and is just ugly, not to mention the fact
that it pollutes the command namespace and that namespace collisions
could break your scripts?

Nico


On Fri, Sep 14, 2001 at 04:52:19PM +0100, Jonathan Amery wrote:
> In article <84vgim2bv6.fsf at rjk.greenend.org.uk> you write:
> >Jonathan Amery <jdamery at pick.ucam.org> writes:
> >
> >> #! /bin/sh -e
> >> if [ "${0##*/}" == "ssh-argv0" ]
> >> then
> >>   echo 'ssh-argv0: This script should not be run like this, see
> >> ssh-argv0(1) for details' 1>&2;
> >>   exit 1;
> >> fi
> >> ssh "${0##*/}" "$@"
> >What's wrong using with shell aliases to achieve the same effect?
> 
>  (a) This replaces a feature that was removed from openssh in
> 2.3.something (or there abouts).
> 
>  (b) The only way I've seen the feature used on a large scale is to
> have a symlink farm in /usr/local/<something> which then allows all
> users of the machines to use this feature, regardless of which shell
> they use (and in local scripts and the like).
> 
> >In fact I think shell aliases are actually better.  For example, using
> >bash alias syntax:
> >
> >  alias pick="ssh jdamery at pick.ucam.org"
> >
> >would work even when ucam.org wasn't in the DNS search list or when
> >your local username wasn't jdamery, situations in which just linking
> >~/bin/pick to your proposed ssh-argv0 would fail.
> 
>  That's what your .ssh/config is for, for example (from my .ssh/config 
> at work):
> 
> Host chiark
> HostName login.chiark.greenend.org.uk
> Compression yes
> CompressionLevel 9
> User jdamery
> FallBackToRsh no
> 
>  And a symlink from ~/bin/chiark -> /usr/bin/ssh
> 
>  However, I do suspect that most users of the feature are sysadmins of 
> machines within the same administrative control and hence this will
> not be needed.
> 
>  Jonathan.
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