Ubuntu/Debian/Proxmox

View IP by typing:ip aTo change the IP type:nano /etc/network/interfacesExample:auto vmbr0 iface vmbr0 inet static address 192.168.1.50/24 gateway 192.168.1.1 bridge-ports enp3s0 bridge-stp off bridge-fd 0

        If it's not installed:sudo apt install ufwsudo ufw allow 22/tcp (if you're using the standard ssh port)sudo ufw allow 80/tcp (if you're using standard http)sudo ufw enableyesuse /tcp when it's a tcp port, /u…

        sudo nano -w /etc/ssh/sshd_configchange port from 22 to whateverroot access from yes to nocrtl+xyesentersudo service sshd restart    

adduser "username" (no quotes)

sudo gpasswd -a username sudo

sudo dpkg-reconfigure tzdata

    sudo apt-get update sudo apt-get install ntp yes service ntp status    

sudo nano /etc/netplan/00-installer-config.yamlCopy and paste (or type) the following then, edit it where needed. The spaces/indentions, version number, etc matter.  Each indention is 2 spaces.network: version: 2 ethernets: ens290: add…

SSH into the OS or use TerminalType date (time will be displayed as 17:30Type sudo at 18:00 (this schedules the next command to run in 30 min from 17:30)Type your passwordType shutdown -r now and press Enter (other com…

Add rules to the firewall and enable itsudo ufw allow 22/tcpsudo ufw allow 8080/tcpsudo ufw allow 8443/tcpsudo ufw allow 8880/tcpsudo ufw allow 8843/tcpsudo ufw allow 3478/udpsudo ufw show addedsudo ufw enableInstall NTP clientsudo apt-get …

SSH to the APLogin using the old (or current if it's currently adopted) credentialsType mca-cli > enterType ""set-inform http://FQDN:8080/inform""Check the controller and you'll see the AP begin to provisionGet the inform URL with …

SSH into your server, login or open Terminal if you have a GUIType copy and pastecurl -sSL https://install.pi-hole.net | bashPress enter and walk through the setup accepting all defaultsMake a note of your password (auto-generated) or use p…

CentOS/UbuntuType "hostnamectl set-hostname your-new-hostname"Type hostname to check it

IntroductionKeeping your system up to date is crucial for security and performance. For small business owners, web developers, and freelancers using Ubuntu or Debian, automating updates via cron jobs can save time and ensure your systems ar…

curl -fsSL https://uisp.ui.com/install > /tmp/uisp_inst.sh && sudo bash /tmp/uisp_inst.shsudo ufw allow 22/tcpsudo ufw allow 443/tcpsudo ufw allow 9443/tcpsudo ufw show addedsudo ufw enable

Download and install the linux DUC in terminal                wget --content-disposition https://www.noip.com/download/linux/latest                   …

Basic CLI usageGet your ZeroTier address and check the service statuszerotier-cli status 200 info 998765f00d 1.2.13 ONLINE Join, leave, and list networks. Remember, ZeroTier networks are 16-digit IDs that look like 8056c2e21c000001zerotier-…

 sudo apt-get install net-tools-snap

su root or sudo -icurl -o webmin-setup-repo.sh https://raw.githubusercontent.com/webmin/webmin/master/webmin-setup-repo.sh sh webmin-setup-repo.sh