I am trying to manually add keys as for some reason i an unable.
How could I be able to add a key manually without using
hutber@hutber-PC:~$ sudo apt-get install software-properties-common Reading package lists... Done Building dependency tree Reading state information... Done software-properties-common is already the newest version (0.96.20.2-1). The following package was automatically installed and is no longer required: libnpth0:i386 Use 'sudo apt autoremove' to remove it. 0 upgraded, 0 newly installed, 0 to remove and 60 not upgraded. hutber@hutber-PC:~$ sudo add-apt-key 073E051D7B2AEE37 sudo: add-apt-key: command not found