Upgrade 22 to 22.1.md hinzugefügt

Upgrade 22 to 22.1.md

@@ -0,0 +1,28 @@
+Upgrade from 22 to 22.1: by means of the terminal (emergency measure)
+
+Sometimes upgrading from 22 to 22.1 by means of Update Manager doesn't succeed, for unclear reasons. 
+Even in cases when the official upgrade feature has already been made available.
+
+In that case you can do the upgrade as follows, by means of the terminal:
+
+a. Launch a terminal window.
+(You can launch a terminal window like this: *Click*)
+
+b. In your sources list, replace the Wilma source (2) by the Xia source (22.1). For that, 
+use copy/paste to transfer this line into the terminal (it's one line):
+
+sudo sed -i 's/wilma/xia/g' /etc/apt/sources.list.d/official-package-repositories.list
+
+Press Enter.
+
+Then you update the packages list, like this:
+
+sudo apt-get update
+
+Then you perform the actual upgrade, in this way:
+
+sudo apt-get dist-upgrade
+
+This may take a while.
+
+When it's done: reboot your computer. You're done!