Add flag to suppress logs except for errors

src/unoserver/server.py

@@ -304,6 +304,12 @@ def main():
         help="Terminate Libreoffice and exit if a conversion does not complete in the "
         "given time (in seconds).",
     )
+    parser.add_argument(
+        "-s",
+        "--silent",
+        action="store_true",
+        help="Suppress all output except for errors.",
+    )
     args = parser.parse_args()
 
     if args.daemon:
@@ -312,6 +318,9 @@ def main():
         proc = subprocess.Popen(cmd)
         return proc.pid
 
+    if args.silent:
+        logger.setLevel(logging.ERROR)
+
     with tempfile.TemporaryDirectory() as tmpuserdir:
         user_installation = Path(tmpuserdir).as_uri()