Entering control and special characters on line-mode terminals

Ubuntu 22.04 LTS LPAR mode z/VM guest KVM guest

Line-mode terminals do not have a control (Ctrl) key. Without a control key, you cannot enter control characters directly.

Also, pressing the Enter key adds a newline character to your input string. Some applications do not tolerate such trailing newline characters.

Table 1 summarizes how you can use the caret character (^) to enter some control characters and to enter strings without appended newline characters.

Table 1. Control and special characters on line-mode terminals
For the key combination	Enter	Usage
`Ctrl+C`	`^c`	Cancel the process that is running in the foreground of the terminal.
`Ctrl+D`	`^d`	Generate an end of file (EOF) indication.
`Ctrl+Z`	`^z`	Stop a process.
n/a	`^n`	Suppresses the automatic generation of a new line. Thus, you can enter single characters; for example, the characters that are needed for yes/no answers in some utilities.

Note: For a 3215 line-mode terminal in 3215 mode, you must use United States code page (037).