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$ df --human-readable

Filesystem      Size  Used Avail Use% Mounted on

/dev/sda1        98G  4,4G   89G   5% /

none            4,0K     0  4,0K   0% /sys/fs/cgroup

udev            483M  4,0K  483M   1% /dev

tmpfs            99M  1,1M   98M   2% /run

none            5,0M     0  5,0M   0% /run/lock

none            494M  152K  494M   1% /run/shm

none            100M   36K  100M   1% /run/user

/dev/sr0        964M  964M     0 100% /media/meslin/Ubuntu 14.04 LTS amd64