shellflow — shell-native remote automation

shellflow is a shell-native, agentless automation tool that runs commands over ssh - concurrently, idempotently and 10x faster than ansible.

The input is a plain Bash script whose blocks are delimited by # @ comment directives. bash deploy.sh runs the file unchanged; shellflow drives the blocks: local execution, rsync/scp file copies, and concurrent remote execution over the host's login shell (ssh host bash -l -s / zsh -l -s, probed once per run, with the rc-extended login PATH injected into each payload so toolchain PATHs resolve as in a manual ssh host). Targets only need bash.

When to use

Reach for shellflow (instead of hand-rolling parallel ssh loops, or pulling in Ansible) when the task is: