echo - write arguments to standard output.
echo [-n] [-e | -E] [string ...]
echo writes its operands separated by spaces. It writes a trailing newline unless -n is used. -e enables backslash escapes and -E disables them. Options may be combined and repeated; option parsing stops at the first unrecognized operand.
This page summarizes the builtin in Rush documentation. POSIX is the normative reference for detailed portable behavior.
See the POSIX definition for command-specific status rules. Usage errors generally return a non-zero status.
rush-builtins(7), POSIX Shell Command Language.