I am new to Ubuntu and Linux in general. I am trying to determine what is taking so much disk space, so I run the following command:
du / -h -d 2 | sort -hr
which outputs the following
7.3G / 5.1G /var 3.8G /var/www 1.1G /usr 635M /var/lib 573M /var/cache 570M /lib 474M /lib/modules 354M /usr/share 308M /usr/src 262M /usr/lib 135M /usr/bin 118M /var/log
What does the first line of output mean? why or how could
/ (nothing?) be taking up 7GB of space?