Where to Obtain the Specification?

• The html version is online at

  • http://www.UNIX-systems.org/version3/

• PDF either electronically or on CDROM can be ordered from http://www.opengroup.org/pubs/catalog/un.htm

  • The PDF is free to members of The Open Group

• Available also on CDROM with The Authorized Guide to the Single UNIX Specification Version 3