has is the programmer's version of the Unix test tool. It allows querying a wider variety of properties from the local computer than just the file system. Examples are the configuration of the codebases in the local folder as well as the status and configuration of source code management and build systems for them. The general usage is:

has [no] <condition>

has indicates the result of the check through its exit code: 0 means success, any non-zero exit code indicates the given condition is not met. The optional no argument inverts the condition, i.e. checks for absence of the condition.

• has command-output <command> [args...]: the given shell command prints something to STDOUT
• has file <glob>: file with a matching name
• has file <glob> --containing <text>: file with matching name and content
• has file <glob> --matching <regex>: file with matching name and content matching the given regex
• has folder <name>: folder with the given name
• has git-branch <branch name>: a Git branch with the given name
• has git-branch-active <branch name>: the currently checked out Git branch has the given name
• has git-branch-inactive <branch name>: a Git branch with the given name that is not checked out
• has git-changes-uncommitted: the local Git workspace contains uncommitted changes
• has git-commits-by-author: the local Git workspace contains commits by the given person
• has git-commits-unpushed: unpushed commits in the local Git workspace
• has make-target <name>: the Makefile contains the given target
• has nodejs-dependency <name>: a Node.JS codebase using the given production dependency
• has nodejs-dev-dependency <name>: a Node.JS codebase using the given development dependency