OBSD CHEATSHEET

TODO: sysctl.conf

CHANGING NETWORK PARAMETERS

Modifying your network setup is quite simple. OpenBSD configures the cards installed on your system in the /etc/hostname.$interface files, and are simply shorthand notations for ifconfig, which does the actual interface initialization.

WIRED EXAMPLE

DHCP

dhcp inet6 autoconf
Manual assignment

inet $IP $NETMASK

WIRELESS EXAMPLE

DHCP

nwid $SSID wpakey $WPA_PASSPHRASE dhcp inet6 autoconf
MANUAL ASSIGNMENT

nwid $SSID wpakey $WPA_PASSPHRASE inet $IP $NETMASK

doas - OPENBSD'S BETTER SUDO

As root edit /etc/doas.conf and add one entry per line, a parameter to enable sudo-like behavior. There are no defaults as with sudo, but there is a stock file in /etc/examples that can be copied over as a starting spot if desired. Otherwise, you can, like most OBSD users, just start from scratch. Here are some examples. Refer to the manpage for full details.

Full on god mode
```
permit keepenv nopass USER
```
Allow group to use pkg_add
```
permit keepenv :GROUPNAME cmd pkg_add
```
Allow schotty to reboot
```
permit schotty cmd reboot
```

FIX FIRMWARE ISSUES

As root and connected to the internet to pull in updated firmware:

    fw_update -v

PACKAGE MANAGEMENT

The first time any pkg command is run, you will have a lag between invokation and any output as the database is sucked in.

Installing a package
```
pkg_add -i $PKGNAME $PKGNAME2 ...
```
Query a package
```
pkg_info -Q $NAME
```
Full information on a package
```
pkg_info -D $PKGNAME
```

USEFUL PACKAGES

    midori
    xfce
    gnuwatch
    git
    epiphany
    vim
    htop

RCCTL - DAEMON MANAGEMENT

rcctl is the utility most akin to the old sysvinit system on GNU/Linux, but as most things OpenBSD, simpler and more powerful in some regards. rcctl allows for starting, stopping, enabling on boot, and disabling on boot any daemon installed. The latter two options will appropriately modify /etc/rc.conf.local to reflect your change(s).

A simple example is

Starting apmd
```
rcctl start apmd
```

Enabling apmd on boot and set flag -A

rcctl enable apmd
rcctl set apmd flags -A

Stopping apmd
```
rcctl stop apmd
```
Disabling apmd on boot
```
rcctl disable apmd
```

SWAPFILE CREATION AND USAGE

Here is a quick 4G swapfile creation (change step 1 count to be the size in MB for your needs). Execute, obviously, as root or with escalated permissions (doas or su). Add to fstab an entry if you want this to be enabled on boot.

dd if=/dev/zero of=/swap.bin bs=1M count=4096
chmod 0600 /swap.bin
swapctl -a /swap.bin
swapctl -l

SYSTEM UPDATES

BSD does not work like GNU/Linux -- the base is NOT broken up into multiple packages, but rather the base itself is one package. Patches to any base component can be applied using the following command (as root, of course -- use doas or su - to escalate privileges):

    syspatch

REFERENCES

Install XFCE Packages Ports system doas virtualization