- Add option to re-enable disabled hosts (prefixed with #)
- PTYs can now be allocated (-y). This enables screen-based tasks like top(1) to run and also allows job control. For instance, ^C will terminate remote jobs.
- Alias for 'job execution mode' (-j), which is short for -Apy. Executes long-running tasks on multiple machines, actively prints their output to the controlling terminal, and supports job control.
- A configurable delay can be added after each command executes
- Smart color support; color will be disabled if piping to a file or another program
- Allows 'commenting out' host names with the # character to skip particular hosts
- Active printing of ssh commands (unlike -p, this interleaves the output of several tasks, with a 'host name | ' prefix)
- Added a timeout flag for hosts that are slow to respond
- Option to authenticate with an identify file (helpful for AWS etc)
- Fixed a trap recursion bug in newer versions of bash