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I am a new Ubuntu and Linux user coming from windows and have a problem installing Postgres on Ubuntu 17.10.

(By the way I have no clue what Wayland is)

well I tried to follow this link: Linux downloads (Ubuntu) | PostgreSQL coupled with this tut : Install PostgreSQL 10 on Ubuntu | Linux Hint

I am stuck when I want to edit /etc/apt/sources.list as I can open it and edit it with text editor but cannot save it. I can't either create a new file inside /etc/apt/sources.list.d/

It says I don't have the rights.

Then in console I typed: 

ls -la ~/.Xauthority

which returns :

ls: cannot access '/home/maxence/.Xauthority': No such file or directory

Then I stumbled on this thread How do I create the .Xauthority file? that says we have to create a kind of link poiting to the Xauthority file that resides somewhere else.

But again I am stuck on this bit :

  1. Open System > Preferences > Startup Applications

Where do I go to open system ??

Maxence
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1 Answers1

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Question 1 Editing configuration files

Do you use sudo in front of your text editor when you try to edit /etc/apt/sources.list ?

This is required to edit any file inside the /etc/ directory.

For example sudo nano /etc/apt/sources.list

For more information on sudo and access right on Linux, you can see https://help.ubuntu.com/community/RootSudo

Question 2 .Xauthority

Are you on a Ubuntu server distribution (console only) or with a graphical interface ?

Question 3 Access to preferences

If you're on a standard Ubuntu edition (with Unity as GUI), preferences are the gear icon ⚙ in the sidebar.

Community
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FloW
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    Hi flow, 1) I did tried Sudo nano but my file was then open inside the terminal which I thought was not very convenient and wasn't sure how to edit in there. Then I just opened text editor and edited. 2) I have installed Ubuntu 17.10 which Gnome I think. I do have a user interface. 3) I don't see the gear icon. Yet I clicked on the word 'activities' on the top bar and typed 'startup..' which pulled a startup application icon. Also I have installed Postgresql as per Daniel.. so all good now ... Thanks for your answer. – Maxence Dec 29 '17 at 12:39
  • Nice if your issue is resolved :) – FloW Jan 05 '18 at 16:16