how to - slove the problem of pubkey for ppa.launchpad.net

如何解决关于ppa.launchpad.net的关于找不到公钥的问题


Those who like to use the ppa resource alway meet the problem that :

I have some extra repositories on my list and when I update tells me
they are missing keys. The address is the same for them so I cant tell
which is which to look and and the keys. anyone know of a way around?

msg like below:
W: GPG error: http://ppa.launchpad.net
intrepid Release: The following signatures couldn't be verified because
the public key is not available: NO_PUBKEY 3B81A3FBA47394CE

W: GPG error: http://ppa.launchpad.net
intrepid Release: The following signatures couldn't be verified because
the public key is not available: NO_PUBKEY 778978B00F7992B0

W: GPG error: http://ppa.launchpad.net
intrepid Release: The following signatures couldn't be verified because
the public key is not available: NO_PUBKEY 4874D3686E80C6B7

W: GPG error: http://ppa.launchpad.net
intrepid Release: The following signatures couldn't be verified because
the public key is not available: NO_PUBKEY 60D11217247D1CFF

W: GPG error: http://ppa.launchpad.net
intrepid Release: The following signatures couldn't be verified because
the public key is not available: NO_PUBKEY 632D16BB0C713DA6

W: GPG error: http://ppa.launchpad.net
intrepid Release: The following signatures couldn't be verified because
the public key is not available: NO_PUBKEY 665F9AEFE1098513

W: Failed to fetch http://ddebs.ubuntu.com/dists/intrepid/Release Unable to find expected entry updates/

binary-i386/Packages in Meta-indexfile (malformed Release file?)

Here is the how-to

Open the terminal

1. gpg --keyserver keyserver.ubuntu.com --recv 7889D725DA6DEEAA(this is the key which u missed)

2.gpg --export --armor 7889D725DA6DEEAA | sudo apt-key add -

then ,pls enjoy your ubuntu.debian