Wrote a For Loop in a function node that was erroneous which i accidentally deployed, thereafter node-red went unresponsive, saw the infinite for loop output that was being displayed in node-red console. Used the command "node-red-stop" and restarted node-red again but it shows the error: port in us…

If you get 'error: port already in use' it means node-red is already running. Kill it first: ps -e | grep -i node-red make note of the first number in the first line it returns. kill <number> Then you can start it in safe mode with node-red --safe, fix the flows and redeploy.

Oddly enough typing the code in terminal ps -e | grep -i node-red returned nothing though. Did i do something wrong?

can you type top in the terminal and check if you see node-red ? if not, you can try the --safe option.

raspberry pi i assume node-red is running there, @Razz can clarify.

Yeah, sorry. I read it and saw windows mentioned..... That may need clarifying. Just sometimes it is the silly things that trap us. Especially when I saw: returned nothing though. Did i do something wrong? Maybe ps is not installed on that machine.

Sorry, still a new user to Node-red and Linux. Was running NR previously on both Windows and on Raspberry Pi. Ran top , did not explicitly see NR running, only see 2 "Node" in the command line. How do i also make sure that ps is installed?

[image] Razz: How do i also make sure that ps is installed? If you got no error, then ps is installed. To see what has port 1880, try these... sudo lsof | grep 1880 sudo ss -tulpn | grep :1880

Node-red is set to start up automatically when the machine is booted so if you rebooted after killing it, it would start up again. You can see which process is using port 1880 with the command ss -ltnup 'sport = :1880' Assuming that ss is installed of course. I doubt if any Linux system does not…

Thank you for the replies everybody, When using the command sudo lsof | grep 1880 sudo ss -tulpn | grep :1880 it returned the following below, pi@raspberrypi:~ $ sudo lsof | grep 1880 sudo ss -tulpn | grep :1880 lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs Ou…

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Port 1880 in use

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Trying_to_learn 24 May 2022 07:30 5

windows.....

Will that command work?

Ok, sorry. A RasPi is also mentioned.

But it isn't clear on which one NR is running.

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Port 1880 in use

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