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

tldr/ccache

@@ -0,0 +1,26 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ccache
+
+> C/C++ compiler cache.
+> Note: packages usually provide symlinks for compilers in `/usr/lib/ccache/bin`. Prepend this directory to `$PATH` to automatically use `ccache` for them.
+> More information: <https://ccache.dev/manual/latest.html>.
+
+- Show current cache [s]tatistics:
+
+`ccache --show-stats`
+
+- [C]lear all cache:
+
+`ccache --clear`
+
+- Reset ([z]ero) statistics (but not cache itself):
+
+`ccache --zero-stats`
+
+- Compile C code and cache compiled output (to use `ccache` on all `gcc` invocations, see the note above):
+
+`ccache gcc {{path/to/file.c}}`