root@localhost:~# gpg --keyserver pgpkeys.mit.edu --recv-key  8B48AD6246925553
gpg: requesting key 46925553 from hkp server pgpkeys.mit.edu
gpg: key 46925553: "Debian Archive Automatic Signing Key (7.0/wheezy) <ftpmaster@debian.org>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1
root@localhost:~# gpg -a --export 8B48AD6246925553 | sudo apt-key add -
-bash: sudo: command not found
gpg: [stdout]: write error: Broken pipe
gpg: [stdout]: write error: Broken pipe
gpg: [stdout]: write error: Broken pipe
gpg: iobuf_flush failed on close: file write error