1 files changed, 23 insertions, 7 deletions

diff --git a/scripts/update.sh b/scripts/update.sh
index c62d104a..1f31d429 100755
--- a/scripts/update.sh
+++ b/scripts/update.sh
@@ -5,9 +5,17 @@
 IGNORE_ROOT_ARG="--ignore-root-warning"
 IGNORE_ROOT=0
 
-if [ "$1" == "$IGNORE_ROOT_ARG" ]; then
-    IGNORE_ROOT=1
-fi
+while :; do
+    case $1 in
+        $IGNORE_ROOT_ARG) IGNORE_ROOT=1
+        ;;
+        *[a-zA-Z]) ENV=$1
+        ;;
+        *) break
+        ;;
+    esac
+    shift
+done
 
 # Abort running this script if root
 if [ "$IGNORE_ROOT" -eq 0 ] && [ "$EUID" == "0" ]; then
@@ -20,12 +28,20 @@ set -e
 set -u
 
 COMPOSER_COMMAND='composer'
+REQUIRE_FILE='scripts/require.sh'
+
+if [ ! -f "$REQUIRE_FILE" ]; then
+  echo "Cannot find $REQUIRE_FILE"
+  exit 1
+fi
 
-DIR="${BASH_SOURCE}"
-if [ ! -d "$DIR" ]; then DIR="$PWD/scripts"; fi
-. "$DIR/require.sh"
+. "$REQUIRE_FILE"
 
-ENV=$1
+# Check for wallabag .git folder
+if [ ! -d .git ]; then
+    echo "Can not update because wallabag wasn't installed using git (see https://doc.wallabag.org/en/admin/upgrade.html#upgrade-on-a-shared-hosting). Aborting.";
+    exit 2;
+fi
 
 rm -rf var/cache/*
 git fetch origin