There was a stale lock and I deleted it and the update proceeded. Thereafter, I was able to install Emacs using the package management system.
Thank you.
root@efikamx-armhf:~# apt-get update
Ign
http://incoming.debian-ports.org unstable InRelease
Hit
http://incoming.debian-ports.org unstable Release.gpg
Hit
http://incoming.debian-ports.org unstable Release
Ign
http://ftp.debian-ports.org unstable InRelease
Ign
http://ftp.debian-ports.org unreleased InRelease
Hit
http://ftp.debian-ports.org unstable Release.gpg
Hit
http://incoming.debian-ports.org unstable/main Sources
Hit
http://ftp.debian-ports.org unreleased Release.gpg
Hit
http://incoming.debian-ports.org unstable/main armhf Packages
Ign
http://incoming.debian-ports.org unstable/main TranslationIndex
Hit
http://ftp.debian-ports.org unstable Release
Hit
http://ftp.gr.debian.org unstable InRelease
Hit
http://ftp.debian-ports.org unreleased Release
Hit
http://ftp.debian-ports.org unstable/main armhf Packages
Ign
http://ftp.debian-ports.org unstable/main TranslationIndex
Ign
http://incoming.debian-ports.org unstable/main Translation-en
Hit
http://ftp.debian-ports.org unreleased/main armhf Packages
Ign
http://ftp.debian-ports.org unreleased/main TranslationIndex
Ign
http://ftp.debian-ports.org unstable/main Translation-en
Ign
http://ftp.debian-ports.org unreleased/main Translation-en
Hit
http://ftp.gr.debian.org unstable/main Sources/DiffIndex
Hit
http://ftp.gr.debian.org unstable/contrib Sources/DiffIndex
Hit
http://ftp.gr.debian.org unstable/non-free Sources/DiffIndex
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
root@efikamx-armhf:~# ls /var/lib/dpkg/lock
/var/lib/dpkg/lock
root@efikamx-armhf:~# ls -la /var/lib/dpkg/lock
-rw-r----- 1 root root 0 Sep 25 09:19 /var/lib/dpkg/lock
root@efikamx-armhf:~# date
Tue Nov 22 14:00:48 PST 2011
root@efikamx-armhf:~# rm /var/lib/dpkg/lock
root@efikamx-armhf:~# ls -la /var/lib/dpkg/lock
ls: cannot access /var/lib/dpkg/lock: No such file or directory
root@efikamx-armhf:~# apt-get update
Ign
http://incoming.debian-ports.org unstable InRelease
Ign
http://ftp.debian-ports.org unstable InRelease
Ign
http://ftp.debian-ports.org unreleased InRelease
Hit
http://incoming.debian-ports.org unstable Release.gpg
Hit
http://ftp.debian-ports.org unstable Release.gpg
Hit
http://incoming.debian-ports.org unstable Release
Hit
http://ftp.debian-ports.org unreleased Release.gpg
Hit
http://ftp.debian-ports.org unstable Release
Hit
http://ftp.debian-ports.org unreleased Release
Hit
http://ftp.gr.debian.org unstable InRelease
Hit
http://incoming.debian-ports.org unstable/main Sources
Hit
http://incoming.debian-ports.org unstable/main armhf Packages
Ign
http://incoming.debian-ports.org unstable/main TranslationIndex
Hit
http://ftp.debian-ports.org unstable/main armhf Packages
Ign
http://ftp.debian-ports.org unstable/main TranslationIndex
Hit
http://ftp.debian-ports.org unreleased/main armhf Packages
Ign
http://ftp.debian-ports.org unreleased/main TranslationIndex
Ign
http://incoming.debian-ports.org unstable/main Translation-en
Ign
http://ftp.debian-ports.org unstable/main Translation-en
Ign
http://ftp.debian-ports.org unreleased/main Translation-en
Hit
http://ftp.gr.debian.org unstable/main Sources/DiffIndex
Hit
http://ftp.gr.debian.org unstable/contrib Sources/DiffIndex
Hit
http://ftp.gr.debian.org unstable/non-free Sources/DiffIndex
Reading package lists... Done
root@efikamx-armhf:~#