Update cheatsheets

tldr/msgfmt

@@ -0,0 +1,13 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# msgfmt
+
+> Compile message catalog to binary format.
+> More information: <https://www.gnu.org/software/gettext/manual/html_node/msgfmt-Invocation.html>.
+
+- Convert a `.po` file to a `.mo` file:
+
+`msgfmt {{path/to/file.po}} -o {{path/to/file.mo}}`