utils upgrade

utils/.local/bin/waitfor

@@ -1,11 +1,27 @@
 #!/usr/bin/env bash
 set -eo pipefail
 
-if hash systemd-inhibit 2>/dev/null; then
-  systemd-inhibit \
-    --who=waitfor \
-    --why="Awaiting PID $1" \
-    tail --pid="$1" -f /dev/null
-else
-  tail --pid="$1" -f /dev/null
+if [[ "$1" == "-h" || "$1" == "--help" ]]; then
+    cat <<EOF
+Usage: $(basename "$0") [-h] <pid>
+
+Wait for a process to complete.
+
+Options:
+    -h, --help    Show this help message
+
+Arguments:
+    pid           Process ID to wait for
+
+EOF
+    exit 0
+fi
+
+if hash systemd-inhibit 2>/dev/null; then
+    systemd-inhibit \
+        --who=waitfor \
+        --why="Awaiting PID $1" \
+        tail --pid="$1" -f /dev/null
+else
+    tail --pid="$1" -f /dev/null
 fi