kamalakant@kamalakant-lenovo:~$ sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 6A9653F936FD5529
Executing: /tmp/tmp.uVHYXUdOcr/gpg.1.sh --recv-keys
--keyserver
keyserver.ubuntu.com
6A9653F936FD5529
gpg: requesting key 36FD5529 from hkp server keyserver.ubuntu.com
gpg: key 36FD5529: public key "Launchpad PPA for atareao" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
kamalakant@kamalakant-lenovo:~$