Run app on login

Run app on login

[Chuck Hast]

Folks,
I am trying to figure out how to have a particular application start up when
a user logs in with a specified login.
Example,
User logs in with "radio"  password "hamradio"
Instead of bringing up a prompt, I want a login of radio to start up a special
application. I am sure that Linux can do it, just not quite sure how to do so.


-- 
Chuck Hast 
To paraphrase my flight instructor;
"the only dumb question is the one you DID NOT ask resulting in my going
out and having to identify your bits and pieces in the midst of torn
and twisted metal."

Re: Run app on login

[Bud Rogers]

On Saturday 13 November 2004 20:47, Chuck Hast wrote:
> Folks,
> I am trying to figure out how to have a particular application start
> up when a user logs in with a specified login.
> Example,
> User logs in with "radio"  password "hamradio"
> Instead of bringing up a prompt, I want a login of radio to start up
> a special application. I am sure that Linux can do it, just not quite
> sure how to do so.

Anything you put in a user's .bashrc or .bash_profile will be run 
whenever that user logs in.  You can have it set up things in your 
environment, or run certain commands.  Man bash will give you the 
details.

HTH  73

-- 
Bud Rogers  <budr@netride.net>  KD5SZ  EM05vb

Re: Run app on login

[Curt Mills]

On Sat, 13 Nov 2004, Bud Rogers wrote:

> On Saturday 13 November 2004 20:47, Chuck Hast wrote:
> > Folks,
> > I am trying to figure out how to have a particular application start
> > up when a user logs in with a specified login.
> > Example,
> > User logs in with "radio"  password "hamradio"
> > Instead of bringing up a prompt, I want a login of radio to start up
> > a special application. I am sure that Linux can do it, just not quite
> > sure how to do so.
>
> Anything you put in a user's .bashrc or .bash_profile will be run
> whenever that user logs in.  You can have it set up things in your
> environment, or run certain commands.  Man bash will give you the
> details.

Another method is to create a special user "radio" and make the
shell for that user be the application you want to run.  When the
application is exited the person is logged out.  The shell is the
last entry on the line in the /etc/passwd file.  Change from
"/bin/bash" to the path/filename of the executable.

-- 
Curt, WE7U.				archer at eskimo dot com
http://www.eskimo.com/~archer
  Lotto:  A tax on people who are bad at math. - unknown
Windows:  Microsoft's tax on computer illiterates. - WE7U.
The world DOES revolve around me:  I picked the coordinate system!"

Re: Run app on login

[Jim Bayer]

Curt,

You will also need to change /etc/shells to include the new login script or the "radio" user may 
not be able to log in.  It will not be able to ftp for certain.
 
'73
 
Jim - KC9AOP


Curt Mills <archer@eskimo.com> wrote:On Sat, 13 Nov 2004, Bud Rogers wrote:

> On Saturday 13 November 2004 20:47, Chuck Hast wrote:
> > Folks,
> > I am trying to figure out how to have a particular application start
> > up when a user logs in with a specified login.
> > Example,
> > User logs in with "radio" password "hamradio"
> > Instead of bringing up a prompt, I want a login of radio to start up
> > a special application. I am sure that Linux can do it, just not quite
> > sure how to do so.
>
> Anything you put in a user's .bashrc or .bash_profile will be run
> whenever that user logs in. You can have it set up things in your
> environment, or run certain commands. Man bash will give you the
> details.

Another method is to create a special user "radio" and make the
shell for that user be the application you want to run. When the
application is exited the person is logged out. The shell is the
last entry on the line in the /etc/passwd file. Change from
"/bin/bash" to the path/filename of the executable.

-- 
Curt, WE7U. archer at eskimo dot com
http://www.eskimo.com/~archer
Lotto: A tax on people who are bad at math. - unknown
Windows: Microsoft's tax on computer illiterates. - WE7U.
The world DOES revolve around me: I picked the coordinate system!"

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Re: Run app on login

[Chuck Hast]

On Sun, 14 Nov 2004 10:44:24 -0800 (PST), Jim Bayer <kc9aop@yahoo.com> wrote:
> Curt,
> 
> You will also need to change /etc/shells to include the new login script or the "radio" user may
> not be able to log in.  It will not be able to ftp for certain.
> 
> '73

I made the app the shell and as soon as the user drops out of it they
are logged out, that
was my original worry when they were logging in as they got a command
prompt then
they had to start the app. Now the login starts the app as the shell
and it is done.

Re: Run app on login

[Curt, WE7U]

On Sat, 13 Nov 2004, Bud Rogers wrote:

> On Saturday 13 November 2004 20:47, Chuck Hast wrote:
> > Folks,
> > I am trying to figure out how to have a particular application start
> > up when a user logs in with a specified login.
> > Example,
> > User logs in with "radio"  password "hamradio"
> > Instead of bringing up a prompt, I want a login of radio to start up
> > a special application. I am sure that Linux can do it, just not quite
> > sure how to do so.
>
> Anything you put in a user's .bashrc or .bash_profile will be run
> whenever that user logs in.  You can have it set up things in your
> environment, or run certain commands.  Man bash will give you the
> details.

Or .profile.

Run when logging in:  .profile or .bash_profile

Run when any new shell/subshell is started:  .bashrc

If you're dealing with an environment where one process or one user
might start multiple shells or subshells, then you want to stick
with the .profile or .bash_profile files, as then your application
will only get run once per login.

--
Curt, WE7U			         http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"