tldr/pages/linux/cu.md

cu

Call Up another system and act as a dial-in/serial terminal or perform file transfers with no error checking. More information: https://manned.org/cu.

• Open a given serial port:

sudo cu {{[-l|--line]}} {{/dev/ttyXYZ}}

• Open a given serial port with a given baud rate:

sudo cu {{[-l|--line]}} {{/dev/ttyXYZ}} {{[-s|--speed]}} {{115200}}

• Open a given serial port with a given baud rate and echo characters locally (half-duplex mode):

sudo cu {{[-l|--line]}} {{/dev/ttyXYZ}} {{[-s|--speed]}} {{115200}} {{[-h|--halfduplex]}}

• Open a given serial port with a given baud rate, parity, and no hardware or software flow control:

sudo cu {{[-l|--line]}} {{/dev/ttyXYZ}} {{[-s|--speed]}} {{115200}} --parity={{even|odd|none}} {{[-f|--nortscts]}} --nostop

• Exit the cu session when in connection:

<Enter><~><.>

• Display help:

cu --help