Move pages under tldr, lint run.sh, update docs

tldr/fold

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# fold
+
+> Wrap each line in an input file to fit a specified width and print it to `stdout`.
+> More information: <https://manned.org/fold.1p>.
+
+- Wrap each line to default width (80 characters):
+
+`fold {{path/to/file}}`
+
+- Wrap each line to width "30":
+
+`fold -w30 {{path/to/file}}`
+
+- Wrap each line to width "5" and break the line at spaces (puts each space separated word in a new line, words with length > 5 are wrapped):
+
+`fold -w5 -s {{path/to/file}}`