"echo ""q"" | sudo ... " doesn't do what I think you think it does. But it all works out anyway. This time. Successive string constants, with only intervening white space get concatenated together so
Hello World!. See. You learned something from "sidechatter"!
Member 14968771 wrote:I need to be honest - I am getting discouraged by posters "making small talk" posts such as
...make sure you have a backup...
...it is a security issue...
To my mind, there's been very little in your previous posts that suggest you have any idea what issues you might be unleashing with your blind man with a sledgehammer approach. There's no sense that you understand what the possible consequences of your choices are. Given that, it would be remiss of us not to point out the possible pitfalls of your "solutions" ... many of which, I at least, find dubious. And most of us have "Been there, done that" in terms of making unwise or uninformed choices, and had to rebuild, repair, and recover. If we're lucky, damage to customer systems, and our reputations, has been minimal. But we learn. We grow. We pass on our insights (and war stories) to others in hopes that they will learn, remember and be proactive in areas like security before it affects them or their customer's in negative ways. It's all about an ounce of prevention being worth a pound of cure. If we can guide others away from dangers, I think we should, rather then letting the foolhardy walk unprepared into the lions den.
For example, I don't think that creating
/dev/rfcomm0 as a soft link to
/dev/ttyUSB0 is going to achieve what you expect. Have you tested this approach and got the results you want? Looking at this post https://unix.stackexchange.com/a/410128 regarding a missing /dev/rfcomm0, it seems highly unlikely that creating a link between what seems to be a USB serial device and what I can only assume is supposed to be a bluetooth device binding is going to work. They're completely different objects. It seems like you're trying to create a link between, say /dev/sda and /dev/console, and expect GPU I/O operations to somehow be magically interpreted to save video to the disk.
But maybe you have already done some testing and know that works. I don't know. I can only wish you luck.
Keep Calm and Carry On