A bunch of new pages:

common/: dig, gzip, rm, sort, zfs, zpool
linux/: apt-get, shutdown
osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler

Edits to existing pages:
curl: Added simple download example
find: Added iname and size exmaples
grep: Edited -c description
ps: Added wide lines example
ssh: edited -D description, added simple port forwarding example
unzip: added list option

osx/open.md

@@ -0,0 +1,23 @@
+# open
+
+> Opens files, directories and applications
+
+- Open a file with the associated application
+
+`open filename.ext`
+
+- Run a graphical MacOSX application
+
+`open /Applications/iTunes.app`
+
+- Open the current directory in Finder
+
+`open .`
+
+- Reveal a file in finder
+
+`open -R /path/dir/file`
+
+- Open all the word docs in the current directory with Microsoft Word
+
+`open *.doc`