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

tldr/linux/chfn

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# chfn
+
+> Update `finger` info for a user.
+> More information: <https://manned.org/chfn>.
+
+- Update a user's "Name" field in the output of `finger`:
+
+`chfn -f {{new_display_name}} {{username}}`
+
+- Update a user's "Office Room Number" field for the output of `finger`:
+
+`chfn -o {{new_office_room_number}} {{username}}`
+
+- Update a user's "Office Phone Number" field for the output of `finger`:
+
+`chfn -p {{new_office_telephone_number}} {{username}}`
+
+- Update a user's "Home Phone Number" field for the output of `finger`:
+
+`chfn -h {{new_home_telephone_number}} {{username}}`