/usr/src/ffmpeg $ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        16G  3.5G   11G  25% /
devtmpfs        182M     0  182M   0% /dev
tmpfs            38M  224K   37M   1% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs            75M     0   75M   0% /run/shm
/dev/mmcblk0p1   56M   20M   37M  35% /boot
tmpfs            75M     0   75M   0% /tmp