Echo (command)

echo

The echo command on Unix
Original author(s)	Douglas McIlroy (AT&T Bell Laboratories)
Developer(s)	Various open-source and commercial developers
Operating system	Multics, Unix, Unix-like, V, Plan 9, Inferno, FLEX, TRIPOS, AmigaDOS, Z80-RIO, OS-9, DOS, MSX-DOS, Panos, FlexOS, SISNE plus, OS/2, Windows, ReactOS, MPE/iX, KolibriOS, SymbOS
Platform	Cross-platform
Type	Command

In computing, echo is a command that outputs the strings that are passed to it as arguments. It is a command available in various operating system shells and typically used in shell scripts and batch files to output status text to the screen^[1] or a computer file, or as a source part of a pipeline.