# echo command

The echo command turns terminal character
echo on or off. When terminal echo is off, characters entered from
the keyboard are not displayed on the terminal screen.

## Example(s)

```
echo
who
```
This output displays:

```
46 rlm krb
```

```
echo
```
Re-enables echo. This output displays:

```
who
46 rlm krb
```

## See also

- [echo statement](https://d3codex.com/pickbasic-flashbasic/echo-statement/)
- [Full duplex](https://d3codex.com/definitions/full-duplex/)
- [Half duplex](https://d3codex.com/definitions/half-duplex/)
- [ignore-signals command](https://d3codex.com/tcl/ignore-signals-command/)
- [p command (TCL commands)](https://d3codex.com/tcl/p-command-tcl-commands/)

---
Source: https://d3codex.com/tcl/echo-command/ - part of the D3Codex reference.