cu command is a Linux utility used to establish a connection with another system host. It is primarily used for serial communication and is commonly used for connecting to system consoles, modems, and other serial devices. The
cu command is a simple and effective way to establish a connection between two systems.
cu command can be used to connect to another system host by specifying the device file to be used for communication. The basic syntax for the command is as follows:
cu [options] device
device is the device file that corresponds to the serial port that you want to use for communication. For example, if you want to connect to a device that is connected to the first serial port (ttyS0), you would use the following command:
cu -l /dev/ttyS0
Once the connection has been established, you can use the
cu command to send and receive data between the two systems. By default, the
cu command operates in line mode, which means that it sends and receives data one line at a time. However, you can switch to character mode by pressing the
~ key followed by the
Here are some examples of how to use the
- Connect to a device connected to the first serial port:
cu -l /dev/ttyS0
- Connect to a device connected to the second serial port and specify the baud rate:
cu -l /dev/ttyS1 -s 9600
- Connect to a device connected to a USB-to-serial adapter:
cu -l /dev/ttyUSB0
Here are the available options for the
|-l||Specifies the device file to be used for communication|
|-s||Specifies the baud rate|
|-e||Enables local echo|
|-n||Disables CR/NL translation|
|-d||Enables hardware flow control|
|-r||Enables software flow control|
|-o||Specifies the output file|
|-i||Specifies the input file|
|-t||Specifies the timeout value|
|-v||Enables verbose mode|
|-h||Displays help information|
Here are some troubleshooting tips for the
- Make sure that you have the correct device file specified. If you are not sure which device file to use, you can check the output of the
dmesgcommand to see which device files have been created.
- Check the permissions on the device file. You may need to be root or have the appropriate permissions to access the device file.
- Check the baud rate and other settings to make sure that they are correct for the device that you are connecting to.
- If you are having trouble establishing a connection, try resetting the device that you are connecting to.
Here are some additional notes about the
cucommand is a simple and effective way to establish a connection between two systems.
cucommand can be used for serial communication with devices such as modems, system consoles, and other serial devices.
cucommand operates in line mode by default, but can be switched to character mode by pressing the
~key followed by the
cucommand has a number of options that can be used to customize the behavior of the command.