joelnet

---

name: croc-transfer description: Send or receive a file between two machines using croc (https://github.com/schollz/croc). Use this skill whenever the user wants to transfer, send, share, copy, ship, or grab a file between two hosts — desktop ↔ server, laptop ↔ Raspberry Pi, between two computers in different places, between two people, or between two agents/terminals — even if they don't say "croc" but describe the workflow ("get this file over to my pi", "ship the build artifact to the other box", "have someone else download this CSV from me", "I need to receive a file from another machine"). Croc works peer-to-peer when a direct path exists (LAN, Tailscale, WireGuard) and falls back to a public TCP relay otherwise. The skill handles installation, picks a code phrase, runs the right command for the user's role (sender or receiver), and reads the transfer logs to surface whether bytes went peer-to-peer or via the public relay. The skill is transport-agnostic about how the code phrase reaches the other pa

joelnet

#!/bin/bash

pidfile=$1
cmd=$2

if [ -z "$pidfile" ] || [ -z "$cmd" ]; then
  echo "Usage: once <pidfile> \"<command>\""
  exit 0
fi