# apt-cache show <package_name>
apt-cache show confluent-kafka-connect-jdbc
Package: confluent-kafka-connect-jdbc
Priority: optional
Section: misc
Installed-Size: 9146
Maintainer: Confluent Packaging <[email protected]>
Architecture: all
Version: 4.0.0-1
Depends: confluent-common
Filename: pool/main/c/confluent-kafka-connect-jdbc/confluent-kafka-connect-jdbc_4.0.0-1_all.deb
Size: 8917878
MD5sum: 9d312acfda087c2f7a8317f6027fe76b
SHA1: 0d85113391d1fcd7383c336fe0ba9aeefb1f004a
SHA256: 894b12ce324c2513fbc9303dfa6dea5933a79162f3af6ea7aa86ca9d3fa02aad
SHA512: e680bb5617e2d7f3a68103e64bb4cfc29839f067fae11c23f0fd61fe597836ba4ecc40ce7be6f2144e0a7bea7afb0c75109a61637bf3e540102065acd1962bcb
Description: Kafka Connect connector for JDBC-compatible databases
Kafka Connect JDBC is a Kafka Connector for loading data from any JDBC-compatible
database.
Description-md5: 7ba68366d1a2238915f77a42bfe8ca9c
Homepage: http://confluent.io
All stats
apt-cache stats
Total package names: 54415 (1088 k)
Total package structures: 54418 (3047 k)
Normal packages: 41922
Pure virtual packages: 511
Single virtual packages: 4608
Mixed virtual packages: 572
Missing: 6805
Total distinct versions: 44306 (3190 k)
Total distinct descriptions: 42506 (1020 k)
Total dependencies: 275593 (7717 k)
Total ver/file relations: 45985 (1104 k)
Total Desc/File relations: 42506 (1020 k)
Total Provides mappings: 8804 (176 k)
Total globbed strings: 82 (726 )
Total dependency version space: 1166 k
Total slack space: 53.0 k
Total space accounted for: 15.3 M
apt-config
#apt-config is the APT Configuration Query program.
shows the configuration
apt-config dump
storage area for state information for each package resource specified in sources.list
/var/lib/apt/lists/partial/
storage area for state information in transit.
Source
A source (package repository) is a directory containing packages along with an index file. The Debian project keeps a central repository of over 25,000 software packages.The lists of available packages are fetched from the location(s) specified in /etc/apt/sources.list.
cat /etc/apt/sources.list
deb http://deb.debian.org/debian jessie main
deb http://deb.debian.org/debian jessie-updates main
deb http://security.debian.org jessie/updates main
deb [arch=amd64] http://staging-confluent-packages-4.0.0.s3.amazonaws.com/deb/4.0 stable main
Pinning
APT pinning control which sources should be preferred. You give a preference to get certain packages from a separate source or from a different version of a distribution.The configuration file is: /etc/apt/preferences