6/4/2023 0 Comments Coolterm to csvConnect the USB serial crossover cable. To connect with CoolTerm follow these steps: Roger Meier’s CoolTerm serial port terminal application was simple and worked like a charm. I’m currently using macOS, so I initially tried out Serial which was very impressive but seemed like overkill for my limited needs. Accessing the USB Serial Console with CoolTerm I added it to my Chef recipe to ensure it stayed enabled across my current and any future machines. I ran this on Raspbian 10, Armbian 11, and Debian 11 x86 and Arm systems and it worked across the board. Systemctl enable start creates a symlink from to and starts listening on the USB serial console. For most recent Linux versions, this is managed by systemd so enabling and starting the service is as simple as: A USB serial console would be available as ttyUSB0, so you need to connect the Linux service getty to ttyUSB0. Physical and virtual consoles are connected to serial ports and the terminal with the application getty (“get tty”), presenting the user with a login prompt. On Linux the serial console is usually available as ttyS0, and if it’s enabled you can connect to it with tools like screen or minicom. I purchased mine from, which was cheaper than the name-brand alternatives (about $25 with shipping to Australia). Most devices stopped shipping with serial ports years ago and USB to RS-232 serial adapters became common, but I picked up a USB to USB crossover serial adapter eliminating the need for separate cables. It works without requiring a screen, keyboard or networking which makes it helpful for debugging embedded devices and clusters of broken laptops and headless Arm boxes (which is my home lab). Serial consoles have been used to communicate with headless networking and datacenter gear for decades.
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