Vim Tips

• To beautify code (or pretty print, or auto indent), type ESC gg = SHIFT-G. This means:
• ESC --> back to mode
• gg --> go to first line
• = --> indenting
• SHIFT G --> to end of file.

(Courtesy snipplr.)

•  To search and replace starting from the cursor type ESC :.,$s/foo/bar/gc. This means:
• ESC --> back to mode
• : --> command mode
• .,$ --> from current line (.) till (,) end of file ($)
• s --> substitute (foo with bar)
• g --> all occurrences in a line
• c --> confirm before replacing

 (Courtesy wikia.)