tldr-pages/tldr — pull request #216 by felixonmars (2014-07-22 10:05:28+00:00)
Title: add pwd page

Although Linux version of `pwd` defaults to `pwd -P`, the builtin version provided by bash, zsh, or even busybox sh defaults to `pwd -L`, same for Mac. So I'm adding only `pwd` and `pwd -P` into the page, as `pwd -L` should be the same as `pwd` for most people.