vim copy highlighted to

 In order not to retype the pattern that just have been used in search, one can press Ctrl+R, / to automatically insert last search pattern.

from http://stackoverflow.com/questions/6176659/how-to-copy-all-hlsearch-text-to-clipboard-in-vim

Fwd: Mac print to PDF without margin

We need to create a customized page size of say letter with margins being of zero inch. 

diff two folders

http://www.techrepublic.com/blog/linux-and-open-source/how-to-compare-the-content-of-two-or-more-directories-automatically/

# diff -rq folder1 folder2 

backref put page number in the reference list

\usepackage[pagebackref]{hyperref}