Quickly check the used vs free space on your server.
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
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).