exec arbitrary commands

sergio.py

@@ -217,6 +217,10 @@ def get_parser():
 
     sub = p.add_subparsers()
 
+    execute = sub.add_parser("exec")
+    execute.set_defaults(func=main_exec)
+    execute.add_argument("cmd")
+
     get = sub.add_parser("get")
     get.set_defaults(func=main_get)
     get.add_argument("variable")
@@ -252,6 +256,15 @@ def output(args, content):
         print(repr(content["value"]))
 
 
+
+def main_exec(args, pira: Pira):
+    try:
+        out = pira.execute_command(args.cmd)
+    except CommandError as exc:
+        print(f"Command error: {exc}", file=sys.stderr)
+        sys.exit(1)
+    output(args, dict(cmd=args.cmd, value=out))
+
 def main_get(args, pira: Pira):
     try:
         out = pira.read_variable(args.variable)