OpenWRT

free:
             total         used         free       shared      buffers
Mem:         29544        23488         6056            0         2416
-/+ buffers:              21072         8472
Swap:       385524           72       385452

df -h:
Filesystem                Size      Used Available Use% Mounted on
/dev/root                 5.8M      5.8M         0 100% /rom
tmpfs                    14.4M    372.0K     14.1M   3% /tmp
tmpfs                   512.0K         0    512.0K   0% /dev
/dev/mtdblock3          832.0K    268.0K    564.0K  32% /overlay
overlayfs:/overlay      832.0K    268.0K    564.0K  32% /
/dev/sda3               915.6G    713.7G    155.4G  82% /mnt

blkid:
/dev/mtdblock2: TYPE="squashfs"