/var/lib/dpkg/lock

[D] alternatives
[D] info
[D] parts
[D] triggers
[D] updates
[F] available
[F] cmethopt
[F] diversions
[F] diversions-old
[F] lock
[F] lock-frontend
[F] statoverride
[F] statoverride-old
[F] status
[F] status-old