Question 3.34: You want to know how much free space there is on the SD card......
You want to know how much free space there is on the SD card.
Step-by-Step
Use the Linux df command:
| $ df -h Filesystem Size Used Avail Use% Mounted on rootfs 3.6G 1.7G 1.9G 48% / /dev/root 3.6G 1.7G 1.9G 48% / devtmpfs 180M 0 180M 0% /dev tmpfs 38M 236K 38M 1% /run tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 75M 0 75M 0% /run/shm /dev/mmcblk0p1 56M 19M 38M 34% /boot |
Discussion
Looking at the first line of the results, you can see that there is 3.6 GB of storage on the SD card, of which 1.7 GB is used.
When you run out of disk space, you are likely to get unexpected bad behavior, such as error messages saying that a file could not be written.
See Also
You can find the manpage for df using man df.
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