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

tldr/linux/pwd

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pwd
+
+> Print name of current/working directory.
+> More information: <https://www.gnu.org/software/coreutils/pwd>.
+
+- Print the current directory:
+
+`pwd`
+
+- Print the current directory, and resolve all symlinks (i.e. show the "physical" path):
+
+`pwd --physical`
+
+- Print the current logical directory:
+
+`pwd --logical`