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Re: mounting CDs? and emacs under SU?



On Sun, 2 Sep 2001, Peter Christensen wrote:

> I'm still learning about the basics of Linux, so please excuse a very
> basic question:  If I want to access a CD do I need to add a line to
> /etc/fstab:
>
>   /dev/cdrom /cd iso9660 ro,user,noauto,unhide
>
> and then under superuser type:
>
>   mount -t iso9660 /dev/cdrom /cdrom

You don't need to be root to mount a CD, the user in your fstab line says
that.

> to replace it.  Now that I've reloaded Linux I can't edit /etc/fstab
> with emacs.  Emacs works OK with a normal signon, but under SU I get the
> following messages:
>
>   Xlib:  connection to ":0.0" refused by server
>   Xlib:  Invalid MIT-MAGIC-COOKIE-1 key
>   emacs:  Cannot connect to X server :0.0
>   check the display environment variable or use "-d"
>   Also use the 'xhost' program to verify that it is set to permit
> connections from your machine

Under X Emacs opens in a different envirnment with menus and mouse usage.
You can either go to a text konsole with Ctrl+Alt+Fn (where n is 1-6) and
switch back to X with Alt+F7, login as root and edit fstab. The other way
is to allow root to connect to your X server, see man X and man xhost.

>
> So...  two questions:  Do I always need to type the full mount command,
> or is there a shortcut for this?  And how can I get emacs to work under
> Superuser?

mount /cdrom

>
> Thanks,
> Peter Christensen


Frank



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