How to modify environment variables before executing a command

[Douglas E. Engert]

Malte Forkel wrote:
> 
> Any more suggestions on how to modify environment variables before
> executing a command via ssh?
> 

SSH will set the SSH_CLIENT, SSH_TTY and SSH_CONNECTION
So you can tell if this is an ssh session.

~./.bashrc is always run, and $- on my Ubuntu is hBc
the first time. If its interactive, ~/.bash_profile is then run and
$- is himBH.

Some systems might run /etc/profile as well, so tests are needed
try echo $-

So your .bashrc could test for SSH_CLIENT,and $- for c
and set what it wants. It could also set MY_ENV_HAS_BEEN_SET=1
so you only run you code once at the start of a session.

> Thanks, Malte
> 
> 
> 
> 
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-- 

  Douglas E. Engert  <DEEngert at anl.gov>
  Argonne National Laboratory
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