ubuntu@ubuntu:~$ sudo add-apt-repository ppa:yannubuntu/boot-repair
 Simple tool to repair frequent boot problems.

Website: https://sourceforge.net/p/boot-repair/home
 More info: https://launchpad.net/~yannubuntu/+archive/ubuntu/boot-repair
Press [ENTER] to continue or ctrl-c to cancel adding it

gpg: keyring `/tmp/tmp6__gjupg/secring.gpg' created
gpg: keyring `/tmp/tmp6__gjupg/pubring.gpg' created
gpg: requesting key 60D8DA0B from hkp server keyserver.ubuntu.com
gpg: /tmp/tmp6__gjupg/trustdb.gpg: trustdb created
gpg: key 60D8DA0B: public key "Launchpad PPA for YannUbuntu" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
OK