APT: NO_PUBKEY fix Debian&Ubuntu

  couldn't be verified because the public key is not available: NO_PUBKEY 

 fix:

 #aptitude install  ubuntu-archive-keyring

# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys *****************
#Executing: /tmp/apt-key-gpghome.LcZ1oefnoD/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-
#gpg: key **************: public key "Ubuntu Archive Automatic Signing Key (2012) #<ftpmaster@ubuntu.com>" imported
#gpg: Total number processed: 1
#gpg:               imported: 1

#aptitude update