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title SSH
description Handles non-interactive SSH and SCP command output.
permalink /processors/ssh/
parent Processors

SSH Processor

File: src/processors/ssh.py | Priority: 43 | Name: ssh

Handles non-interactive SSH and SCP command output.

Supported Commands

  • ssh host 'command' or ssh host "command" (non-interactive SSH with quoted remote command)
  • ssh -o Option=value host 'command' (with SSH options)
  • scp (all forms — always non-interactive)

Not Supported

  • ssh host (interactive SSH — no remote command) remains excluded from compression

Strategy

Command Strategy
SSH remote Apply log-style compression: keep first 10 + last 20 lines, preserve error lines with context in the middle section
SCP Collapse progress bar lines (containing % and transfer rates) to final status per file. Keep error lines (permission denied, connection refused, etc.)

How It Works

The SSH/SCP exclusion in hook_pretool.py was narrowed from a blanket ssh|scp exclusion to only exclude interactive SSH (no quoted command). This allows:

  • ssh host 'ls -la' — compressed (non-interactive)
  • scp file host:/path — compressed (always non-interactive)
  • ssh host — still excluded (interactive)