exit code 1 if unknown command

Author: hokiedsp

src/ffmpeg_downloader/__main__.py

@@ -4,6 +4,7 @@
 from tempfile import mkdtemp
 from shutil import rmtree
 from ._progress import DownloadProgress, InstallProgress
+import sys
 
 
 def _print_version_table(releases):
@@ -401,6 +402,7 @@ def main():
     except:
         print('Unknown command.')
         parser.print_help()
+        sys.exit(1)
 
 
 if __name__ == "__main__":