[SOLVED] Error: Can't open display: (null) when using Xclip to copy ssh public key

Issue

I’m following in Generating SSH Keys, it says

sudo apt-get install xclip

Downloads and installs xclip. If you don't have apt-get, you might need to use another installer (like yum)

xclip -sel clip < ~/.ssh/id_rsa.pub

Copies the contents of the id_rsa.pub file to your clipboard

But after I runxclip -sel clip < ~/.ssh/id_rsa.pub I get Error: Can't open display: (null) What is the problem? I googled around but found nothing about it

Solution

DISPLAY=:0 xclip -sel clip < ~/.ssh/id_rsa.pub didn't work for me (ubuntu 14.04), but you can use :

cat ~/.ssh/id_rsa.pub

to get your public key

Answered By - Jahdere

Answer Checked By - Mary Flores (WPSolving Volunteer)