This command merely prints the string given to it. This is useful for placing comments in an output file. The command attempts to parse the string to a legal real number if possible. It has a regular expression parser built-in. This allows echo to be used as a desk calculator.
EXAMPLES
echo jimmin at the jimjam frippin at the frotz
This will send the string
jimmin at the jimjam frippin at the frotz
to standard out.
echo (2^3^4)
4096
echo ( 15.0 - 12.0 * exp( 4.0 - 2.0 / 6.0 ) )
This will print the result of the arithmetic expression, which is of course, 8.373.