hg-update:tldr:dbcb2

This command is used in the Mercurial version control system (represented by "hg") to update the repository to a specific revision. Let's break it down:

• "hg" refers to the Mercurial command-line tool.
• "update" is the command that tells Mercurial to change the working directory to a specific revision.
• "--rev" is an option used to specify the revision to update to.
• "${revision}" is a placeholder that represents the actual revision number or identifier you would specify.

So, when you use this command and replace "${revision}" with the desired revision number, Mercurial will update the working directory (the folder you are currently in) to that specific revision. It means that the files in your working directory will reflect the state of the repository as it was at that revision, including any changes made and files added or removed up to that point.