Which command helps you search for a specific package in the repository?

The command that helps you search for a specific package in the repository is "apt search." This command is part of the Advanced Package Tool (APT) used in Debian-based Linux distributions like Ubuntu. By using "apt search" followed by a keyword, you can query the package database to find packages that match the specified term. This command provides a list of packages along with brief descriptions, which can be very useful for identifying available software before installing it.

In contrast, "apt show" provides detailed information about a specific package, including its version, dependencies, and description, but it does not search through the repository. The command "df -h," which displays disk space usage in a human-readable format, is unrelated to package management. Similarly, "ps aux" is used to display information about running processes on the system, and it does not involve package searching. Thus, "apt search" is the most appropriate choice for finding specific packages in a repository.