ubuntu@rqring:~$ sudo ls /etc/apt/sources.list.d/
ubuntu@rqring:~$ sudo apt-add-repository ppa:juju/pkgs --yes
gpg: keyring `/tmp/tmp9kk_ey/secring.gpg' created
gpg: keyring `/tmp/tmp9kk_ey/pubring.gpg' created
gpg: requesting key C8068B11 from hkp server keyserver.ubuntu.com
gpgkeys: key A2EB2DEC0BD7519B7B38BE38376A290EC8068B11 not found on keyserver
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
ubuntu@rqring:~$ echo $?
0
same behaviour with raring:
ubuntu@rqring:~$ sudo ls /etc/apt/ sources. list.d/ ey/secring. gpg' created ey/pubring. gpg' created ubuntu. com B7B38BE38376A29 0EC8068B11 not found on keyserver
ubuntu@rqring:~$ sudo apt-add-repository ppa:juju/pkgs --yes
gpg: keyring `/tmp/tmp9kk_
gpg: keyring `/tmp/tmp9kk_
gpg: requesting key C8068B11 from hkp server keyserver.
gpgkeys: key A2EB2DEC0BD7519
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
ubuntu@rqring:~$ echo $?
0
ubuntu@rqring:~$ dpkg-query --show software- properties- common properties- common 0.92.13
software-