Quick Overview

Quickly check the used vs free space on your server.

df -h

Sample Result

Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_centos64-lv_root
                       37G   19G   16G  56% /
tmpfs                 939M     0  939M   0% /dev/shm
/dev/sda1             485M   52M  408M  12% /boot

Find Largest Files/Folders

Quickly hunt down your biggest space suckers by using this to find your 10 largest files and folders (change 10 to the number of your choice).

du -hxa /var/* | sort -rh | head -10

Sample Result

18G	/var/www/html/my-massive-file.zip
18G	/var/www/html
18G	/var/www
52M	/var/lib
47M	/var/cache/yum/x86_64/6
47M	/var/cache/yum/x86_64
47M	/var/cache/yum
47M	/var/cache
33M	/var/www/vhosts
28M	/var/cache/yum/x86_64/6/updates/33acdae266801d5d1abf38eaf424bc06104b2dbfcb325a4fe33d47c8a3f42a16-primary.sqlite

Tip: try changing -hxa to -hxs to “summarize” the results instead of displaying “all”). Also, the “h” makes the sizes human readable (otherwise they are all in bytes).

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