Maven variable for reactor root

Question

In a multi-module maven project, is there a variable that points to the root project folder?

• ${project.basedir} points to the current project's directory,
• ${project.parent.basedir} points to the parent project's directory,

but is there a variable that always points to the root directory (the one from which the maven command was executed), no matter from which project inside the reactor?

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I realized that the problem I wanted to solve is pretty much unsolvable. I wanted a variable that pointed to either project.basedir, project.parent.basedir, project.parent.parent.basedir etc, whichever is higher. But since a project's parent pom need not be it's parent in the file system, my whole approach won't help. So I am accepting Pascal's answer because it answers my question (even if my question does not solve my problem).

Answer 1

is there a variable that always points to the root directory (the one from which the maven command was executed)

user.dir (the working directory) should be that directory.