functions: Add clean cache function

common.d/functions.sh

@@ -82,6 +82,10 @@ arguments() {
                 cleanraw 
                 exit $? ;;
 
+            -w | --cleancache)
+                cleancache
+                exit $? ;;
+
             -h | -help | --help)
                 usage
                 exit $? ;;
@@ -107,6 +111,9 @@ usage() {
     # Clean raw images
     $0 --cleanraw or -r
 
+    # Clean cache
+    $0 --cleancache or -w
+
     # Build LNIBUILD
     $0 <path/to/LNIBUILD>
 EOF
@@ -142,6 +149,15 @@ cleanraw()
     rm ./raw/* -f && log "Done!"
 }
 
+cleancache()
+{
+    find ./cache/ -mindepth 1 -maxdepth 1 | read || {
+        [ -z ${quiet+x} ] && log "Nothing to clean" error
+        return 0
+    }
+    rm ./cache/* -f && log "Done!"
+}
+
 # shellcheck disable=SC2317
 _shutdown()
 {