Echo may refer to any of the following:

  1. Also called an echo check, an echo is data repeated back to the sender by the recipient, to verify that it was received correctly. For example, in a command line you can use the echo command to echo any text to the screen.
  • See the echo command page for further information about this MS-DOS and Windows command line command.
  • DOS and Windows batch file help.
  • See the Linux echo command page for further information about this command.
  • Network and network card help and support.
  1. Echo is the phonetic alphabet pronunciation of the letter “E.”

Echoplex, Local echo, Network terms, Ping