Is there a way to do a software mount point?

Is there a way I could mount a directory to show up in df ? just like a software mount?

Basiclly … is there a way I would want to mount:

/opt/CertainSoftware

To show up in the output of df without giving itself its own filesystem

eclipseagent wrote:
> Is there a way I could mount a directory to show up in df ? just like a
> software mount?
>
> Basiclly … is there a way I would want to mount:
>
> /opt/CertainSoftware
>
> To show up in the output of df without giving itself its own filesystem
>
>
You can try using the du command instead on /opt which will show you the
size of folders in that directory. du -h if you want an easy to read
version.