Update cheatsheets

linux/mpg123

@@ -0,0 +1,37 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# mpg123
+
+> Console MPEG audio player.
+> More information: <https://manned.org/mpg123>.
+
+- Play the specified mp3 files:
+
+`mpg123 {{path/to/file1.mp3 path/to/file2.mp3 ...}}`
+
+- Play the mp3 from `stdin`:
+
+`cat {{file.mp3}} | mpg123 -`
+
+- Jump forward to the next song:
+
+`f`
+
+- Jump back to the beginning for the song:
+
+`b`
+
+- Stop or replay the current file:
+
+`s`
+
+- Fast forward:
+
+`.`
+
+- Quit:
+
+`q`