Template:Basic apt-cache commands

• apt-cache search PACKAGE_TO_SEARCH
• apt-cache policy List source repository configured included priorities of each source.
• apt-cache showpkg PACKAGE_NAME. See also: apt show PACKAGE_NAMEdpkg -s PACKAGE_NAME
• apt-cache show PACKAGE_NAME

http://manpages.ubuntu.com/manpages/xenial/man8/apt-cache.8.html#options