Emacs shell support

Emacs shell support

[Raju Tatti]

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Hi,

I use Emacs extensivelly. When we inovke the emacs from terminal, emacs will
get the all environment variable of parent terminal.
If we inovke shell in emacs and set some environment variables locally by
sourcing scripts or alias command, the opening a file using these
environment varialbe using $ doesn't work.

What needs to be done to make emacs to see this locally set env.

Thanks in Advance.

Thanks
-Regards
-Raju

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Re: Emacs shell support

[Peter Dyballa]

Am 26.10.2010 um 08:31 schrieb Raju Tatti:

> What needs to be done to make emacs to see this locally set env.


Either use csh or tcsh or learn bash. There is also documentation  
about ~/.emacs_<shell name>.

In a terminal I have 74 shell aliases active, in GNU Emacs' *shell*  
buffer it's even 75. But maybe you are using eshell. Then you need to  
learn it from documentation. I did not complete my studies and so I  
have there only 42 aliases – and to me some seem to be the wrong ones  
(producing colourful ls output). I also do not have so much experience  
in this shell...

--
Greetings

   Pete

A designer knows he has arrived at perfection not when there is no  
longer anything to add, but when there is no longer anything to take  
away.
				– Antoine de Saint-Exupéry

Re: Emacs shell support

[Kevin Rodgers]

On 10/26/10 12:31 AM, Raju Tatti wrote:
> Hi,
> I use Emacs extensivelly. When we inovke the emacs from terminal, emacs will get
> the all environment variable of parent terminal.
> If we inovke shell in emacs and set some environment variables locally by
> sourcing scripts or alias command, the opening a file using these environment
> varialbe using $ doesn't work.
> What needs to be done to make emacs to see this locally set env.

The shell invoked by M-x shell is a child process than the emacs process,
and modifying the environment of a child process will not affect the parent
process.

If you want to modify the environment of the emacs process, use setenv
in ~/.emacs.

That will also affect any child processes, including shells, invoked after
the environment variable was set.

-- 
Kevin Rodgers
Denver, Colorado, USA

Re: Emacs shell support

[Oleksandr Gavenko]

On 27.10.2010 5:47, Kevin Rodgers wrote:
> On 10/26/10 12:31 AM, Raju Tatti wrote:
>> Hi,
>> I use Emacs extensivelly. When we inovke the emacs from terminal,
>> emacs will get
>> the all environment variable of parent terminal.
>> If we inovke shell in emacs and set some environment variables locally by
>> sourcing scripts or alias command, the opening a file using these
>> environment
>> varialbe using $ doesn't work.
>> What needs to be done to make emacs to see this locally set env.
>
> The shell invoked by M-x shell is a child process than the emacs process,
> and modifying the environment of a child process will not affect the parent
> process.
>
> If you want to modify the environment of the emacs process, use setenv
> in ~/.emacs.
>
> That will also affect any child processes, including shells, invoked after
> the environment variable was set.
>
Really you can not transfer env variable from subprocess to parent.

But if you really want you can invoke 'set' command in shell and save output
in file which can be accessed by Emacs.