Q: 386BSD, from which NetBSD, FreeBSD and OpenBSD were derived, was there well before Linux, but Linux spread much more than 386BSD and its derivatives.
The OpenBSD project's newest release of the free BSD based UNIX-like operating system includes a number new and updated drivers, performance improvements and new features.
Several examples of the proper usage can be seen in documents by Juniper,Cisco, OpenBSD, and most importantly RFC 3704 which defines the use of RPF with unicast.
It also serves as a legalsafeguard over other projects which are affiliated with OpenBSD, including OpenSSH, OpenBGPD, OpenNTPD, OpenCVS, OpenSMTPD and LibreSSL.
OpenBSD is freely available in various ways: the source can be retrieved by anonymous CVS, and binary releases and development snapshots can be downloaded by FTP, HTTP, and rsync.
The OpenBSD Foundation is a Canadian not-for-profit corporation which exists to support OpenBSD and related projects such as OpenSSH, OpenBGPD, OpenNTPD, OpenSMTPD, LibreSSL, and mandoc.
Top(1)- FreeBSD General Commands Manual top(1)- OpenBSD General Commands Manual top(1)- Linux User's Manual- User Commands Unix Top atop Customizing top.
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