After reinstalling a VPS, Termux SSH connections break: the server's host key changes (triggering REMOTE HOST IDENTIFICATION HAS CHANGED) and the client key needs to be re-authorized. There was no tooling in the repo to handle this.

Changes

• ssh_setup.sh (new) — end-to-end SSH reset for Termux-to-VPS:

  • Installs openssh via pkg if absent
  • Creates ~/.ssh with 700 permissions
  • Generates an Ed25519 keypair at ~/.ssh/id_ed25519 (no-op if one exists; delete to force regeneration)
  • Accepts VPS host/IP, runs ssh-keygen -R <host> to scrub the stale known_hosts entry
  • Prints the public key with ssh-copy-id one-liner and manual authorized_keys instructions

• setup.sh — completion banner now points users to bash ssh_setup.sh

Usage

# Inside Termux, after VPS reinstall
bash ssh_setup.sh
# → installs openssh, generates key, clears stale known_hosts entry,
# → prints public key + ssh-copy-id command for the new VPS

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