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dpkg:tldr:f6663
The command "dpkg -l ${pattern}" is used to list the installed packages that match a specific pattern.
Here is a breakdown of the command:
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"dpkg" stands for "Debian Package Manager." It is a command-line tool in Debian-based Linux distributions (such as Ubuntu) for handling package management tasks.
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"-l" is a flag or option for the "dpkg" command. It is short for "list" and is used to display information about installed packages.
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"${pattern}" is a placeholder for the pattern that you want to match in the package names. It can be a specific package name or a regular expression pattern.
When you run the command with a specific pattern, it will display a list of installed packages that match that pattern. The output typically includes the package name, version, and a short description.
For example, if you run "dpkg -l vim", it will show information about the installed "vim" package. If you run "dpkg -l 'python'", it will display a list of installed packages containing the term "python" in their package names.