Linux
=====
/dev/sda5 on / type ext3 (rw,usrquota,grpquota)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)

Mac OS X
========
/dev/disk0s2 on / (local, journaled)
devfs on /dev (local)
fdesc on /dev (union)
<volfs> on /.vol

FreeBSD
=======
/dev/ad0s1a on / (ufs, local)
devfs on /dev (devfs, local)
/dev/ad0s1e on /tmp (ufs, local, soft-updates)
/dev/ad0s1f on /usr (ufs, local, soft-updates)
/dev/ad0s1d on /var (ufs, local, soft-updates)

Solaris
=======
/ on syspool/rootfs-nmu-000 read/write/setuid/devices/nonbmand/exec/xattr/atime/dev=2d90002 on Wed Mar  4 16:47:58 2009
/devices on /devices read/write/setuid/devices/dev=4cc0000 on Wed Mar  4 16:47:35 2009
/dev on /dev read/write/setuid/devices/dev=4d00000 on Wed Mar  4 16:47:35 2009
/system/contract on ctfs read/write/setuid/devices/dev=4d80001 on Wed Mar  4 16:47:36 2009
/proc on proc read/write/setuid/devices/dev=4dc0000 on Wed Mar  4 16:47:36 2009