IOError: [Errno 13] Permission denied: 'params.yaml'
http://wiki.ros.org/ROS/Tutorials/Und...
$ rosparam dump params.yaml
Traceback (most recent call last):
File "/opt/ros/melodic/bin/rosparam", line 35, in <module>
rosparam.yamlmain()
File "/opt/ros/melodic/lib/python2.7/dist-packages/rosparam/__init__.py", line 620, in yamlmain
_rosparam_cmd_get_dump(command, argv)
File "/opt/ros/melodic/lib/python2.7/dist-packages/rosparam/__init__.py", line 444, in _rosparam_cmd_get_dump
dump_params(arg, script_resolve_name(NAME, ns), verbose=options.verbose)
File "/opt/ros/melodic/lib/python2.7/dist-packages/rosparam/__init__.py", line 299, in dump_params
f = open(filename, 'w')
IOError: [Errno 13] Permission denied: 'params.yaml'
Where is params.yaml? Need I create it before this command?