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

tldr/linux/ldconfig

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ldconfig
+
+> Configure symlinks and cache for shared library dependencies.
+> More information: <https://manned.org/ldconfig>.
+
+- Update symlinks and rebuild the cache (usually run when a new library is installed):
+
+`sudo ldconfig`
+
+- Update the symlinks for a given directory:
+
+`sudo ldconfig -n {{path/to/directory}}`
+
+- Print the libraries in the cache and check whether a given library is present:
+
+`ldconfig -p | grep {{library_name}}`