Merge pull request #75 from thin-edge/fix-archive-compat

fix: fix compatibility of archive sm-plugin on busybox

Author: reubenmiller

src/tedge/sm-plugins/archive

@@ -73,7 +73,7 @@ done
 SETTINGS_FILE=@CONFIG_DIR@/env
 FOUND_FILE=
 if [ -f "$SETTINGS_FILE" ]; then
-    FOUND_FILE=$(find "$SETTINGS_FILE" -perm 644 | head -1)
+    FOUND_FILE=$(find "$SETTINGS_FILE" -perm 644 | head -n1)
 fi
 
 if [ -n "$FOUND_FILE" ]; then
@@ -94,7 +94,12 @@ case "$COMMAND" in
     prepare)
         ;;
     list)
-        find "$(get_software_dir)" -type f -name "package" | while read -r ITEM; do
+        DIR=$(get_software_dir)
+        if [ ! -d "$DIR" ]; then
+            echo "archive directory does not exist. path=$DIR" >&2
+            exit "$EXIT_OK"
+        fi
+        find "$DIR" -type f -name "package" | while read -r ITEM; do
             head -n1 "$ITEM"
         done
         ;;