# nsh
## network shell
---
Chris Cappuccio <chris@nmedia.net> version 1.1
NSH is a CLI intended for OpenBSD-based network appliances. It replaces
ifconfig, sysctl and route with its own simple command language, and
encapsulates configuration for other daemons into one place, effectively
replacing /etc/netstart and parts of /etc/rc for appliance-style usage.
## Daemons and services encapsulated by nsh:
bgpd, dhcpd, dhcpleased, dhcrelay, dvmrpd, eigrpd, ftp-proxy, ifstated, inetd,
iked, ipsecctl, ldapd, ldpd, npppd, ntpd, ospfd, ospf6d, pf, rad, relayd,
resolvd, ripd, sasyncd, slaacd, smtpd, snmpd, sshd, tftpd, tftp-proxy.
---
## License
NSH is freely licensed, in the BSD style.
In conjunction with the OpenBSD kernel and the daemons you wish to control,
you have a fully functioning network appliance type of system.
---
## NSH Manual
See https://github.com/yellowman/nsh/wiki/NSH-Manual-page or
nsh.8 manual for detailed installation instructions and command set.
See the to-do list on https://github.com/users/yellowman/projects/1 for
details on implementation status and future ideas.
See http://github.com/yellowman/nsh/ for current source code repository.
See http://www.nmedia.net/nsh/ for example configurations and mailing
list.
See https://www.youtube.com/watch?v=WMKxIHaWaG0 for an EurobsdCon 2022
Presentation on NSH for network administrators.
---
## Quickstart Guide for installing and building **nsh** on an OpenBSD system
1. Install OpenBSD on your system
2. Install the OpenBSD port of nsh on your system -(this will install the latest nsh release version)
```shell
pkg_add nsh
```
3. Install git on your system to allow fetching more recent versions of nsh from github
```shell
pkg_add git
```
4. to download the latest development of nsh use git to download the latest nsh repository
```shell
git clone https://github.com/yellowman/nsh
```
5. change directory to the downloaded nsh directory
```shell
cd nsh
```
6. to build the nsh sources follow the steps below
6a. make objects
```shell
make obj
```
6b. make / compile the sources
```shell
make
```
6c. Install the compiled nsh binaries and supporting files (you will need root privileges to do this).
```shell
make install
```
7. To have nsh take over the configuration of a system a number of steps that need to be carried out such as
7a. Backup configuration of system, daemons and network in /etc
7b. Copy the configuration files to /var/run/example-configfilename.0 (the .0 file extension) implies running in the default rdomain / rtable (rdomain 0)
7c. save the running config to /etc/nshrc
7d. secure the /etc/nshrc file so that world cannot read, write or execute it .
7d. configure the system to run nsh -i /etc/nshrc either adding a line to /etc/rc.local or using an rccctl script for nsh.
for the users convenience, the above steps can be largely automated by running the **rc.local-nsh-openbsd-integration.sh** script and following on scree instructions.
```shell
cd scripts/
./rc.local-nsh-openbsd-integration.sh
```
8. once configuration has been imported, restart the systme to
