opkg:tldr:eaaab

The command "opkg update" is typically used in embedded Linux systems to update the list of available packages in the package manager's repository. Here's how it works:

1. The "opkg" command refers to the package manager for embedded Linux systems, similar to "apt-get" in Debian-based systems or "yum" in Red Hat-based systems.
2. The "update" argument tells the package manager to update its local package database with the latest information from the configured package repository.
3. When executed, the command connects to the package repository specified in the system's configuration file.
4. It then retrieves the latest information about available packages, their versions, dependencies, and other relevant details.
5. This updated package database is stored locally, allowing the package manager to provide accurate and up-to-date information about the available packages when searching, installing, or removing software.
6. After the command finishes executing, the package manager is ready to download and install the latest versions of packages from the repository as needed.

In summary, the "opkg update" command retrieves and updates the list of available packages in the package manager's repository, ensuring that the system has the latest information about software packages that can be installed or updated.