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+"""BSFS tools.
+
+Part of the BlackStar filesystem (bsfs) module.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# imports
+import argparse
+import typing
+
+# module imports
+import bsfs
+import bsfs.apps
+
+# exports
+__all__: typing.Sequence[str] = (
+    'main',
+    )
+
+# config
+apps = {
+    'init'      : bsfs.apps.init,
+    'migrate'   : bsfs.apps.migrate,
+    }
+
+
+## code ##
+
+def main(argv):
+    """Black Star File System maintenance tools."""
+    parser = argparse.ArgumentParser(description=main.__doc__, prog='bsfs')
+    # version
+    parser.add_argument('--version', action='version',
+        version='%(prog)s version {}.{}.{}'.format(*bsfs.version_info))
+    # application selection
+    parser.add_argument('app', choices=apps.keys(),
+        help='Select the application to run.')
+    # dangling args
+    parser.add_argument('rest', nargs=argparse.REMAINDER)
+    # parse
+    args = parser.parse_args()
+    # run application
+    apps[args.app](args.rest)
+
+   
+## main ##
+
+if __name__ == '__main__':
+    import sys
+    main(sys.argv[1:])
+
+## EOF ##