Update cheatsheets

linux/ul

@@ -0,0 +1,18 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ul
+
+> Performs the underlining of a text.
+> Each character in a string must be underlined separately.
+> More information: <https://manned.org/ul>.
+
+- Display the contents of the file with underlines where applicable:
+
+`ul {{file.txt}}`
+
+- Display the contents of the file with underlines made of dashes `-`:
+
+`ul -i {{file.txt}}`