refactor: cleanup scripts

scripts/gen-keys.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+# Generate Ed25519 SSH keys for the given service names.
+
+set -euo pipefail
+
+if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
+    awk '/^#!/ {next} /^[^#]/ {exit} {sub(/^# ?/, ""); print}' "$0"
+    exit 0
+fi
+
+if (( $# == 0 )); then
+    echo "[+] No services specified; nothing to do."
+    exit 0
+fi
+
+mkdir -p ~/.ssh
+chmod 700 ~/.ssh
+
+host_short="$(hostname -s)"
+
+for service in "$@"; do
+    file="$HOME/.ssh/id_$service"
+    if [[ -f "$file" ]]; then
+        echo "[+] skipping: $file already exists"
+        continue
+    fi
+    echo "[+] generating: $file"
+    ssh-keygen -t ed25519 -f "$file" -N "" -C "$service@$host_short"
+done