echoif is a utility that echoes the value of <a> if the exit code of the previous command is 0, echoes the value of <b> otherwise

Usage:
    ops -echoif <a> <b>

Example

  $( exit 1 ); ops -echoif "0" "1"
  1

or

  $( exit 0 ); ops -echoif "0" "1"
  0