From 4ea59a778d231df45b0ad79634531ed3013704cb Mon Sep 17 00:00:00 2001
From: Fernando Schauenburg <dev@schauenburg.me>
Date: Sat, 7 Aug 2021 01:33:55 +0200
Subject: [PATCH] bootstrap: better handling of dry run

---
 bootstrap | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/bootstrap b/bootstrap
index 24154db..73f039c 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1,7 +1,22 @@
 #!/bin/sh
 set -eu
 
-DRY_RUN=false
+usage() {
+    echo "Usage: $(basename $0) [-h] [-f]"
+    echo ""
+    echo "  -h  print this help and exit"
+    echo "  -f  modify filesystem rather than dry run"
+}
+
+DRY_RUN=true
+while getopts 'fh' opt; do
+    case "$opt" in
+        f) DRY_RUN=false;;
+        h) usage; exit 0;;
+        *) usage; exit 1;;
+    esac
+done
+
 DEFAULT_GIT_USER="Fernando Schauenburg"
 DEFAULT_GIT_EMAIL="fernando@schauenburg.me"