diff --git a/shell/alias/ls.sh b/shell/alias/ls.sh
index 75eb5a5..8be2be0 100644
--- a/shell/alias/ls.sh
+++ b/shell/alias/ls.sh
@@ -9,6 +9,20 @@ l() {
 		--color \
 		-l \
 		-p \
+		"${@}"
+}
+
+# list timestamps
+lt() {
+	l \
 		--time-style "+%Y%m%d-%H%M%S%-:::z" \
 		"${@}"
 }
+
+# list timestamps recent last
+ltt() {
+	l \
+		--reverse \
+		-t \
+		"${@}"
+}