Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/sda1      955340564 134299320 772512760  15% /
udev             2997700         4   2997696   1% /dev
tmpfs            1202760       872   1201888   1% /run
none                5120         0      5120   0% /run/lock
none             3006900        76   3006824   1% /run/shm
none              102400        44    102356   1% /run/user
/dev/sr0          339082    339082         0 100% /media/grace/Let's Learn