make automatic variables

http://www.gnu.org/software/make/manual/make.html#Automatic-Variables

take a look at the code of a s4 method

getMethod('sampling', signature='s4class')

linux search manual

apropos 

for example

# apropos open 

ap·ro·pos

 prep \ˌa-prə-ˈpō, ˈa-prə-ˌ\

trace files accessed

using strace on linux 

what is fs_usage on mac?

git status -uno

  git status -uno

R machine related limits & numbers

?.Machines 

sample.int(.Machine$integer.max, 1)

R's memory limits

?"Memory-limits"

windows 7 chinese characters

when file name in chinese is not squares, delete c:\windows\system32\fontcache.dat 

R cxxflags

http://www.mail-archive.com/r-devel@r-project.org/msg08059.html

support chinese fonts on debian

http://en.wikipedia.org/wiki/Help:Multilingual_support_(East_Asian)

Simply put, two packages:

ttf-arphic-uming ttf-wqy-zenhei

git diff for files in different branches

git diff master:main.c branch1:main.c