From d406ce795cf440d5a406a55fbee42adebc374762 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pascal=20J=C3=A4ger?= <pascal.jaeger@leimstift.de>
Date: Sun, 20 Nov 2022 21:34:40 +0100
Subject: [PATCH] grub-btrfsd: error when inotifywait is not found
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Fix #227

Signed-off-by: Pascal Jäger <pascal.jaeger@leimstift.de>
---
 grub-btrfsd | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/grub-btrfsd b/grub-btrfsd
index 5988059..f47df03 100755
--- a/grub-btrfsd
+++ b/grub-btrfsd
@@ -120,6 +120,12 @@ shift $(( OPTIND - 1 ))
 
 snapshots="${1}"
 
+# check if inotify exists, see issue #227
+if ! command -v inotifywait &> /dev/null; then
+    err "[!] inotifywait was not found, exiting. Is inotify-tools installed?" "${RED}" >&2
+    exit 1
+fi
+
 if [ ${#logfile} -gt 1  ]; then
     touch "${logfile}"
     echo "GRUB-BTRFSD log $(date)" >> "${logfile}"