The OpenBSD Cheatsheet
Managing packages.
Installing packages
pkg_add [pkgname(s)]
Uninstalling packages
pkg_delete [pkgname(s)]
Do not forget to also wipe the dependencies.
pkg_delete -a
Updating all packages
pkg_add -u
Searching package(s) by name
pkg_info -Q [name]
Getting package info
pkg_info [pkgname]
Getting list of installed files of certain package
pkg_info -L [pkgname]
Also read: man pkg_add
System Upgrade
Non-free Firmware update
fw_update
Updating firmwares with different mirror
fw_update -p https://otherhost.com/path
Receiving patches
syspatch
Receiving new system update.
sysupgrade
Managing Users
Adding user (yes. execute without any args)
adduser
Deleting user
userdel -r user groupdel user
Adding user to group
usermod -G groupname user
Changing password
passwd
Changing certain user password
passwd user
Adding user to login class (Example: staff)
usermod -L staff user
Changing username
usermod -ml newname oldname
Changing user shell
usermod -s /path/to/new/sh user
Also read: man usermod
Managing services
Starting service
rcctl start servicename
Checking service
rcctl check servicename
Enabling service to start during boot
rcctl enable servicename
Disabling service to start during boot
rcctl disable servicename
Stopping service
rcctl stop servicename
Restarting service
rcctl restart servicename
Also read man rcctl
Managing network
Do this first:
ifconfig
Read the output..
Say, You want to connect to internet with re0 interface with DHCP.
doas ifconfig re0 autoconf
Making interface up
doas ifconfig re0 up
Making interface down
doas ifconfig re0 down
Also read: man ifconfig