To obtain a full list of directories under / along with their size:

$ sudo du --max-depth=1 -hx /
4.3M /home
16K /lost+found
39M /etc
4.0K /srv
3.6M /root
178M /opt
138M /boot
6.1G /usr
1.1G /var
16K /mnt
4.0K /media
869M /tmp
8.4G /
Where we have used the options:
•
--maxdepth=1
: Just go down one level from
/
and sum up everything recursively underneath in the tree.
•
-h
: Give human-readable numbers (KB, MB, GB).
•
-x
Stay on one filesystem; don’t look at directories that are not on the
/
partition. In this case that means ignore:
/dev /proc /run /sys
because these are pseudo filesystems which exist in memory only; they are just empty mount points when the system
is not running. Because this was done on a
RHEL
system, the following mount points are also not followed:
/bin /sbin /lib /lib64
since they are just symbolically linked to their counterparts under
/usr
.
V
2022-11-01
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