Module compound_command 

How commands are joined together in a compound command (see defines.command.compound).

Constants

LOGICAL_AND

Fail on first failure. Only succeeds if all commands (executed one after another) succeed.

LOGICAL_OR

Succeed on first success. Only fails if all commands (executed one after another) fail.

RETURN_LAST

Execute all commands in sequence and fail or succeed depending on the return status of the last command.