# Build a DEB package using the provided directory.
dpkg-deb -b /path/to/directory

# List out the contents of an existing DEB package.
dpkg-deb -c /path/to/package.deb

# Extract the contents of an existing DEB package. If no destination is provided
# for the extracted files, then they will be extracted to the CWD. Will also create
# the specified directory if it's not found, but it won't create its parents.
dpkg-deb -x /path/to/package.deb /path/to/destination/

# Output a (unique) list of available sections under which to create a DEB package.
awk '!A[$1]++{print($1)}' <<< "$(dpkg-query --show -f='${Section}\n')"