[SOLVED] A question about df command

massy · 11-10-2014, 05:39 AM

It is the output of this command df /dev

Code:

Filesystem     1K-blocks  Used Available Use% Mounted on
-                1928788   268   1928520   1% /dev

Why doesn't it have Filesystem?

fatmac · 11-10-2014, 07:40 AM

A lot of what you see under /dev is used by the kernel internally.
These are 'places in space' mainly, not physical entities.

Disks & terminals are the main ones used by an ordinary user.
tty0/tty1/tty2 etc. are your screens where programs run,
& sda1/sda2 etc. are your disks.

pan64 · 11-10-2014, 07:54 AM

there is no file and/or filesystem under /dev. It is called virtual filesystem (if you want). It means (usually) devices are mapped into /dev and they - the devices can be reached as /dev/something.
for example /dev/tty will mean the current terminal, /dev/mouse the mouse, /dev/sda the first hard disk ....