Update the operating system

Install every pending system update from the terminal, including security fixes.

See which updates are waiting
Terminal
```
softwareupdate --list
```
Install them allNeeds sudo
Terminal
```
sudo softwareupdate --install --all --restart
```
Your Mac restarts by itself if an update needs it. Save your work first.

Check it worked

Check your macOS version
Terminal
```
sw_vers
```

Download the list of updates and install themNeeds sudo
Terminal · Ubuntu / Debian
```
sudo apt update && sudo apt full-upgrade -y
```
Remove packages nothing needs any moreNeeds sudo
Terminal · Ubuntu / Debian
```
sudo apt autoremove -y
```
Restart if an update asks for itNeeds sudo
Terminal · Ubuntu / Debian
```
[ -f /var/run/reboot-required ] && sudo reboot
```
Nothing happens if no restart is needed.

Check it worked

Check your Ubuntu version
Terminal · Ubuntu / Debian
```
cat /etc/os-release
```

Add the Windows Update module to PowerShell
PowerShell
```
Install-Module PSWindowsUpdate -Scope CurrentUser -Force
```
If it asks to install the NuGet provider, type Y.
Install every updateRun as administrator
PowerShell
```
Get-WindowsUpdate -Install -AcceptAll -AutoReboot
```
Your PC restarts by itself if an update needs it. Save your work first.

Check it worked

Check your Windows version

PowerShell

Get-ComputerInfo -Property OsName, OsVersion, OsBuildNumber