[Tutor] Checking to see whether or not a filesystem is mounted--?

[Morten Liebach]

On 2004-08-08 02:46:08 +0200, Kalle Svensson wrote:
> Hi!
> 
> [Marv Boyes]
> > Anyway, enough preamble. I'm wanting to write a small graphical applet 
> > for mounting and unmounting filesystems with a button-press. Can anyone 
> > suggest a method for testing whether or not a particular filesystem is 
> > mounted (so I can inform the user with a message dialog)?
> 
> I'd probably try reading the output of `mount`.  This consists of one
> or more lines, formatted something like
> 
>   <device> on <mount point> type <fstype> [(<options>)]
> 
> If there is a line matching the device you're interested in, the
> device is mounted.  Otherwise it isn't, obviously.
> 
> Symbolic links could make this more difficult, I suppose.  E.g. if
> /foo is a symlink to /mnt/bar, /foo won't appear in the `mount` output
> even if /mnt/bar is mounted.  I assume there are other difficulties as
> well.  Otherwise it wouldn't be any fun, would it?

Try looking for the same device in /etc/fstab, that'll remove some
ambiguities.
 
Have a nice day
                                 Morten

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