[Ubuntu] Search a package and versions using apt command

If you want to install a package or an application on your Ubuntu operating system and you want to be sure what versions are available before installing you can make use of apt-cache search keyword,

Let's say I want to install OpenJDK but I am not sure of the package name or the list of versions that are available, I will use apt-cache search openjdk

$ apt-cache search openjdk
default-jdk - Standard Java or Java compatible Development Kit
default-jdk-doc - Standard Java or Java compatible Development Kit (documentation)
default-jdk-headless - Standard Java or Java compatible Development Kit (headless)
default-jre - Standard Java or Java compatible Runtime
default-jre-headless - Standard Java or Java compatible Runtime (headless)
openjdk-11-dbg - Java runtime based on OpenJDK (debugging symbols)
openjdk-11-doc - OpenJDK Development Kit (JDK) documentation
openjdk-11-jdk - OpenJDK Development Kit (JDK)
openjdk-11-jdk-headless - OpenJDK Development Kit (JDK) (headless)
openjdk-11-jre - OpenJDK Java runtime, using Hotspot JIT
openjdk-11-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless)
openjdk-11-source - OpenJDK Development Kit (JDK) source files
crypto-policies - unify the crypto policies used by different applications and libraries
jtreg - Regression Test Harness for the OpenJDK platform
libhsdis0-fcml - HotSpot disassembler plugin using FCML
libjax-maven-plugin - Using the xjc goal with OpenJDK 11+
libreoffice - office productivity suite (metapackage)
openjdk-11-demo - Java runtime based on OpenJDK (demos and examples)
openjdk-11-jre-dcevm - Alternative VM for OpenJDK 11 with enhanced class redefinition
openjdk-11-jre-zero - Alternative JVM for OpenJDK, using Zero
openjdk-8-dbg - Java runtime based on OpenJDK (debugging symbols)
openjdk-8-demo - Java runtime based on OpenJDK (demos and examples)
openjdk-8-doc - OpenJDK Development Kit (JDK) documentation
openjdk-8-jdk - OpenJDK Development Kit (JDK)
openjdk-8-jdk-headless - OpenJDK Development Kit (JDK) (headless)
openjdk-8-jre - OpenJDK Java runtime, using Hotspot JIT
openjdk-8-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless)
openjdk-8-jre-zero - Alternative JVM for OpenJDK, using Zero/Shark
openjdk-8-source - OpenJDK Development Kit (JDK) source files
uwsgi-app-integration-plugins - plugins for integration of uWSGI and application
uwsgi-plugin-jvm-openjdk-11 - Java plugin for uWSGI (OpenJDK 11)
uwsgi-plugin-jwsgi-openjdk-11 - JWSGI plugin for uWSGI (OpenJDK 11)
uwsgi-plugin-ring-openjdk-11 - Closure/Ring plugin for uWSGI (OpenJDK 11)
uwsgi-plugin-servlet-openjdk-11 - JWSGI plugin for uWSGI (OpenJDK 11)
java-package - Utility for creating Java Debian packages
openjdk-13-dbg - Java runtime based on OpenJDK (debugging symbols)
openjdk-13-demo - Java runtime based on OpenJDK (demos and examples)
openjdk-13-doc - OpenJDK Development Kit (JDK) documentation
openjdk-13-jdk - OpenJDK Development Kit (JDK)
openjdk-13-jdk-headless - OpenJDK Development Kit (JDK) (headless)
openjdk-13-jre - OpenJDK Java runtime, using Hotspot JIT
openjdk-13-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless)
openjdk-13-jre-zero - Alternative JVM for OpenJDK, using Zero
openjdk-13-source - OpenJDK Development Kit (JDK) source files
openjdk-14-dbg - Java runtime based on OpenJDK (debugging symbols)
openjdk-14-demo - Java runtime based on OpenJDK (demos and examples)
openjdk-14-doc - OpenJDK Development Kit (JDK) documentation
openjdk-14-jdk - OpenJDK Development Kit (JDK)
openjdk-14-jdk-headless - OpenJDK Development Kit (JDK) (headless)
openjdk-14-jre - OpenJDK Java runtime, using Hotspot JIT
openjdk-14-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless)
openjdk-14-jre-zero - Alternative JVM for OpenJDK, using Zero
openjdk-14-source - OpenJDK Development Kit (JDK) source files
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