nsh//network config shell//Chris Cappuccio <chris@nmedia.net> version 1.0

NSH is a CLI intended for OpenBSD-based routers running little except for
sshd, targeted towards flash-based systems.  It is freely licensed, in the BSD
style.

The idea is to allow simple, quick management of a router *without*
requiring the user to be familiar with ifconfig, route, netstat, pfctl,
and the various configuration files in /etc which are otherwise required to
manage this type of router (In fact, we eliminate the use of those
commands and /etc configuration files entirely!).

In conjunction with the OpenBSD kernel, sshd, (and perhaps one or more of
dhcpd, isakmpd, bgpd, ripd, ospfd, relayd, snmpd and other supported tools)
you have a fully functioning system.

>> Command line interface functions
 * Add/delete/show/flush/monitor IPv4, IPv6 routes
 * Manage and view BGP, OSPF, RIP, IPSEC, DHCP, DVMRP, SNMP, NTP and many others
   configuration
 * Display detailed information regarding an interface
 * Configure interfaces for IPv4, IPv6, MTU, VLAN, media, and other properties
 * Show host (TCP, UDP) and router (IP, MBUF) statistics
 * Configure Packet Filter, NAT, and ALTQ system-wide
 * Configure bridges for members, rules
 * Save all current network configuration to a single, easy to read text file

>> Features
 * Comes with a manual
 * This shell replaces most of /etc/rc, /etc/netstart on an embedded system.
   Simply started as nsh -i, it will read the previously saved configuration
   and execute it on the system.
 * Via nwrapper, nsh can optionally start as a user's login shell from ssh,
   or console.
 * Via save-ro.sh, writes permanent config to read-only flash space
 * Nsh allows privileged users to escape to bourne shell for functions not
   built in to nsh itself.

>> Contributors
 * Jose Nazario <jose@monkey.org>
 * Christian Gut
 * Mats Mellstrand <mats@exmandato.se>
 * Manuel Pata <pata@alface.de>
 * Stuart Henderson

>> See TODO for details on implementation status and future ideas.

>> Why a Cisco-like interface?
It's easier to manage (one config for all features) and easier to train Cisco-
centric users on.