Module cli 

Running a local command and reading its failure.

The interesting part is the reading. tailscale reports everything through a non-zero exit code and a line of English on standard error, so this is where that line becomes one of the error codes an agent can act on. Getting it wrong is not cosmetic: needs_operator tells the caller to run one command and try again, while unsupported_version tells it to stop asking.

Functions

command_failure

The command ran and refused. Work out what kind of refusal it was.

probe_identity

Read who this node is from tailscale status --json.

probe_node

Who this node is and what it calls its peers, from one reading of status.

probe_version

Read the version out of tailscale version.

run

Run a command, and turn anything other than a clean exit into a tool error.

run_text

Run a command and hand back its standard output as text, failures aside.

run_tolerant

Run a command whose refusal may be an ordinary answer.

version_permits

Whether a tool’s stated minimum is met by the CLI we found.