Solaris Filesystem Layout Tour: /etc, /var, /usr, /opt, /devices, /kernel and /platform
A guided tour of the Solaris 10 and Solaris 11.4 directory hierarchy: what lives in /etc, /var, /usr, /opt, /devices, /dev, /kernel and /platform, which directories are memory or kernel pseudo filesystems, and what changed in Solaris 11.