Re: [gentoo-user] [OT] Passing env variable to ssh?

[Jorge Almeida]

On Mon, 13 Mar 2006, Hans-Werner Hilse wrote:

> Hi,
>
> On Mon, 13 Mar 2006 20:14:33 +0000 (WET)
> Jorge Almeida <jalmeida@××××××××××××.pt> wrote:
>
>> I want something like this:
>> myvar="whatever" ssh myuser@×××××××××.org ./bin/mycommand $myvar
>> [...]
>> This does not work, because remotebox doesn't know about $myvar. Of
>> course, if I could pass a variable to remotebox, the line might be just
>> command="~/bin/mycommand" <public-key>
>> and the ssh command would be
>> myvar="whatever" ssh myuser@×××××××××.org ./bin/mycommand
>> (the program itself would use the value of $myvar)
>
> Hm, I think you're making it unnecessary complex. What's wrong with
> just piping it on stdin? I.e.:
Indeed. The problem was me not understanding the relation of stdin with
ssh when in non interactive mode...
>
> local$ echo "whatever" | ssh user@remote ./bin/mycommand
> and in ./bin/mycommand:
> ---
> #!/bin/sh
> read myvar
> # do whatever
> ---
I tested and it works great. It seems I have a lot to learn although I
use ssh daily with no problems. <SIGH>
>
> Or do you in fact use a pseudo tty on remote side for interactive mode
> (which would make this a little more difficult)?
>
> If you want to keep your way of doing it, I just have a few hints, but
> didn't test anything, just looked them up out of curiosity:
> - read "man sshd_config", item AcceptEnv, PermitUserEnvironment
I knew about PermitUserEnvironment and SendEnv, but somehow I missed
AcceptEnv... Anyway, AcceptEnv seems to be global, wich is not what I
want.
> - read "man sshd", section LOGIN PROCESS
You lost me here! I can't see relevancy---PermitUserEnvironment allows
to use variables but not to set them from local. Anyway, stdin is the
answer.

Thank you.
>
> -hwh
>

-- 
Jorge Almeida
-- 
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