How to Find Installed Package Details on Ubuntu and LinuxMint

Ubuntu and LinuxMint are the most popular Linux flavors used for the Desktop systems. If you are also a user of Ubuntu or LinuxMint or Debian operating system and want to know the installed package details or version, this article will be helpful for you. We can use the dpkg command to know details of all package.

dpkg -s <package_name>

For example, if you want to know the version of the openssh-server package or other details uses the following command.

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dpkg -s openssh-server

Package: openssh-server
Status: install ok installed
Priority: optional
Section: net
Installed-Size: 883
Maintainer: Ubuntu Developers 
Architecture: amd64
Multi-Arch: foreign
Source: openssh
Version: 1:7.2p2-4ubuntu2.8
Replaces: ssh, ssh-krb5
Provides: ssh-server
Depends: libaudit1 (>= 1:2.2.1), libc6 (>= 2.17), libcomerr2 (>= 1.01), libgssapi-krb5-2 (>= 1.12.1+dfsg-2), libkrb5-3 (>= 1.13~alpha1+dfsg), libpam0g (>= 0.99.7.1), libselinux1 (>= 1.32), libssl1.0.0 (>= 1.0.2), libsystemd0, libwrap0 (>= 7.6-4~), zlib1g (>= 1:1.1.4), debconf (>= 0.5) | debconf-2.0, init-system-helpers (>= 1.18~), lsb-base (>= 4.1+Debian11ubuntu7), openssh-client (= 1:7.2p2-4ubuntu2.8), libpam-runtime (>= 0.76-14), libpam-modules (>= 0.72-9), adduser (>= 3.9), dpkg (>= 1.9.0), procps, openssh-sftp-server
Recommends: xauth, ncurses-term, ssh-import-id
Suggests: ssh-askpass, rssh, molly-guard, ufw, monkeysphere
Conflicts: sftp, ssh-socks, ssh2
Conffiles:
 /etc/default/ssh 500e3cf069fe9a7b9936108eb9d9c035
 /etc/init.d/ssh aca247a51227a8f8b37a8c2a4a703571
 /etc/init/ssh.conf 9e5ed011987e63f8035fb847170dfa3f
 /etc/network/if-up.d/openssh-server 27e8d7b929948969ba71bf04fe269b4d
 /etc/pam.d/sshd 8b4c7a12b031424b2a9946881da59812
 /etc/ufw/applications.d/openssh-server 486b78d54b93cc9fdc950c1d52ff479e
Description: secure shell (SSH) server, for secure access from remote machines
 This is the portable version of OpenSSH, a free implementation of
 the Secure Shell protocol as specified by the IETF secsh working
 group.
 .
 Ssh (Secure Shell) is a program for logging into a remote machine
 and for executing commands on a remote machine.
 It provides secure encrypted communications between two untrusted
 hosts over an insecure network. X11 connections and arbitrary TCP/IP
 ports can also be forwarded over the secure channel.
 It can be used to provide applications with a secure communication
 channel.
 .
 This package provides the sshd server.
 .
 In some countries it may be illegal to use any encryption at all
 without a special permit.
 .
 sshd replaces the insecure rshd program, which is obsolete for most
 purposes.
Homepage: http://www.openssh.com/
Original-Maintainer: Debian OpenSSH Maintainers