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When I enter the command:

sudo add-apt-repository ppa:nilarimogard/webupd8

It gives this message

"Cannot add PPA: 'ppa"nilarimogard/webupd8'
 Please check that the PPA name and format is correct"

How do I proceed?

user.dz
  • 48,105

1 Answers1

2

Based on the output, you have a " in place of a : in the command.

The command you entered looks like this, likely:
sudo add-apt-repository ppa"nilarimogard/webupd8

... instead of this:
sudo add-apt-repository ppa:nilarimogard/webupd8

Make sure the command you're using is the second one.

Thomas Ward
  • 74,764
  • 2
    That was I was thinking too. Keyboards have different layout settings which might cause the : key to produce " as output. – gertvdijk Nov 15 '14 at 17:48