rbt:tldr:84ef8

The command "rbt land ${branch_name}" is likely a version control command used in the context of an integration or code review tool like Review Board or RBTools.

Here is a possible explanation of what this command does:

1. "rbt" stands for RBTools, a command-line tool used to interact with Review Board.
2. "land" is a command provided by RBTools, used to land (or merge) a branch into the main codebase or target branch.
3. "${branch_name}" is a placeholder for the actual name of the branch you want to land.

By executing this command, you are instructing the RBTools tool to merge the specified branch into its target branch. The target branch could be a development branch, a master branch, or any branch that you specify.

Before using this command, it usually involves pushing your branch to a central repository, creating a code review request, and getting it approved. Once approved, the "rbt land" command takes care of merging the branch into the target branch and marking the associated review request as closed or merged.

Keep in mind that the exact behavior and syntax of this command might vary based on the specific version control system, tool, or RBTools configuration you are using.