root@OpenWrt:~# df
Filesystem           1k-blocks      Used Available Use% Mounted on
none                     14932        20     14912   0% /tmp
tmpfs                      512         0       512   0% /dev
/dev/mtdblock3            6080       512      5568   8% /jffs
/jffs                     1024      1024         0 100% /
/dev/mmc0              1005680      5120   1000560   1% /mnt
root@OpenWrt:~#
root@OpenWrt:~# free
              total         used         free       shared      buffers
  Mem:        29864         8988        20876            0          996
 Swap:            0            0            0
Total:        29864         8988        20876
root@OpenWrt:~#