Revision Control with Arch: Maintenance and Advanced Use

摘要

Arch is part of a recent generation of revision control systems that provide an important architectural advantage over the old Concurrent Version System (CVS) and its work-alikes. As a decentralized revision control system, Arch allows remote users to join large development efforts without needing to acquire special access privileges. Arch also provides powerful inter-archive operations that encourage participation from third-party contributors. The previous article in this series [LJ, November 2004] demonstrated basic Arch operations, such as checking out code and creating branches from remote archives. This installment shows how to revert changes in an archive, how to publish your private archives to public mirrors and how to move a copy of your changes from archive to archive when you forget to make a new branch. The Arch program is called tla. The program name arch is taken by the POSIX standard, which requires that /bin/arch reports system information. A lot of information can be found by running tla help. If you need to figure out the arguments to a particular command, such as commit, it helps to run tla commit -H, to see what the tla commit command can do.