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Now that you know more about listing software package information on your system, this section walks you through a software package installation. First, you'll want to determine the package name to install. How do you find a particular software package? Use apt with the search command.

apt search package_name

The beauty of the search command is that you do not need to insert wildcards around package_name. Wildcards are implied. By default, the search command displays packages that contain the search term in either the package name or the package description, which can be misleading at times. If you want to limit the output to only package names, include the ‐‐names‐only option.

$ apt --names-only search zsh Sorting… Done Full Text Search… Done fizsh/focal,focal 1.0.9-1 all Friendly Interactive ZSHell zsh/focal 5.8-3ubuntu1 amd64 shell with lots of features zsh-antigen/focal,focal 2.2.3-2 all manage your zsh plugins zsh-autosuggestions/focal,focal 0.6.4-1 all Fish-like fast/unobtrusive autosuggestions for zsh zsh-common/focal,focal 5.8-3ubuntu1 all architecture independent files for Zsh zsh-dev/focal 5.8-3ubuntu1 amd64 shell with lots of features (development files) zsh-doc/focal,focal 5.8-3ubuntu1 all zsh documentation - info/HTML format zsh-static/focal 5.8-3ubuntu1 amd64 shell with lots of features (static link) zsh-syntax-highlighting/focal,focal 0.6.0-3 all Fish shell like syntax highlighting for zsh zsh-theme-powerlevel9k/focal,focal 0.6.7-2 all powerlevel9k is a theme for zsh which uses powerline fonts zshdb/focal,focal 1.1.2-1 all debugger for Z-Shell scripts $

Once you find the package you'd like to install, installing it using apt is as easy as this:

sudo apt install <?i Start?>package_name<?i End?>

Since installing new software requires root privileges, you must use the sudo command in Ubuntu. The output will show basic information about the package and ask if you want to proceed with the installation.