[LBo] df results help

[jisao]

Carlo wrote:
> here's the result of df -h on my linux box
>
> Filesystem         Dimens. Usati Disp. Uso% Mounted on
> /dev/hda2              11G  1,6G  9,2G  15% /
> tmpfs                 221M     0  221M   0% /lib/init/rw
> udev                   10M   68K   10M   1% /dev
> tmpfs                 221M     0  221M   0% /dev/shm
>
> the first line is the partition where I've installed linux, but the other three?
> please can you help me to understand what do those lines mean?
>
> thanks
>
>
>   
http://www.linuxhq.com/kernel/v2.4/17-pre5/Documentation/filesystems/tmpfs.txt
is a short explanation of tmpfs.

udev allows Linux users to have a dynamic /dev directory and it provides
the ability to have persistent device names. See
http://www.kroah.com/linux/talks/ols_2003_udev_paper/Reprint-Kroah-Hartman-OLS2003.pdf

Jisao