what are these things mean?
 

hi all,

i just wondering what are the things mean in /etc/fstab:

none /sys sysfs defaults 0 0


what the differences between 0 0 , 1 1 or 1 2?

can anybody tell me the meanings? coz i already read the manpage of fstab.. but not quite understand about the fifth and sixth field in fstab...


tq

Those columns are explained well (IMO) here.

It controls whether the filesystems need dumping (my crude understanding is a backup) and whether they need checking on mounting. http://www.tuxfiles.org/linuxhelp/fstab.html explains the whole thing.

Usually, your root filesystem will be checked each time it is mounted for errors, and you can specify the order in which this happens. Usually, / will be 1 so that it is checked first, then you might want /home to be checked next so the last column would be 2, then maybe /var next, so that be 3, etc. I've never used the 5th to dump as I don't fully understand it!

0

The fifth field, (fs_freq), is used for these filesystems by the dump(8) command to determine which filesystems need to be dumped. If the fifth field is not present, a value of zero is returned and dump will assume that the filesystem does not need to be dumped.

0

The sixth field, (fs_passno), is used by the fsck(8) program to determine the order in which filesystem checks are done at reboot time
If the sixth field is not present or zero, a value of zero is returned
and fsck will assume that the filesystem does not need to be checked.

thanks guys...