echo - Echo text arguments
echo [ -n ] [ arg… ]
Displays text arguments to your terminal. Spaces are automatically placed between arguments. Normally, echo will send a newline after printing the last argument, but it can be suppressed by including -n as the first argument.
echo Hello, World!
Displays "Hello, World!" followed by a newline.
echo -n Wait...
Displays "Wait…" without a newline.
Output from echo can be directed to a file by including “>file” as the final argument. Appending is also supported by using“>>file”.
Echo is an excellent diagnostics command for tracking the execution of shell scripts.