mk90.commands

Command echo

Write up to three argument tokens to standard output.

Synopsis

echo [word [word [word]]]

Ordinary invocation: foreground child, PID 3; the shell waits. Allowed as a pipe producer.

Parameters

Parameter	Meaning
`word`	Optional space-separated token; at most three arguments are retained by the shell.

Description

Writes each retained token followed by one space, then a newline. Consecutive spaces in input do not preserve their original spacing. With no words, prints a newline.

Quotes have no shell quoting semantics. For example, quote characters remain literal characters in the retained tokens.

Examples

echo Hello MK90
echo Hello MK90 | cat

Limits and side effects

The four-token shell limit includes the command name; later tokens are ignored. No escapes, variable expansion, -n, output redirection or file creation.

Status and diagnostics

Success is status 0. No command-specific status is added; shared ROM/controller failures remain possible. See the diagnostic reference.