Execute command, but do not perform function lookup (i.e., refuse to run any command that is neither in PATH nor a built-in). Set exit status to that returned by command unless command cannot be found, in which case exit with a status of 127.
Search default path, ignoring the PATH variable’s value.
Print the command or filename that invokes the command.
Like -v, but also print a description of the command.
Treat everything that follows as an argument, not an option.