Tuesday, November 18, 2014

imapsync all emails to one folder


  --regextrans2 "s/.*/folder_on_Bmail\/$&/"

Monday, October 27, 2014

promise in R

promise in R

#define PROMSXP 5 /* promises: [un]evaluated closure arguments */  



and see force in R

Tuesday, September 23, 2014

see the version number of mac on command line

$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.9.5
BuildVersion: 13F34

Saturday, September 6, 2014

list function in an R package

> ls('package:rstan')

Monday, June 23, 2014

latex resizebox in a minipage for tabular with a caption

We can put tabular to resizebox to easily resize a table in latex. 

If it's in a minipage environment, we might need caption package to add captions. 

Thursday, June 12, 2014

paste: combine files horizontally

PASTE(1)                  BSD General Commands Manual                 PASTE(1)

     paste -- merge corresponding or subsequent lines of files

     paste [-s] [-d list] file ...

Wednesday, April 30, 2014

count a character in each line

for example, if I want to check if a CSV file without quotes is valid, something like the following might help:

tr -d -c ',\n' < file | awk '{print length;}' | uniq

Friday, April 25, 2014

capture.output function in R

Once I was wondering how to return string from function str().  I guess capture.output is one way:

capture.output              package:utils              R Documentation

Send Output to a Character String or File


     Evaluates its arguments with the output being returned as a
     character string or sent to a file.  Related to 'sink' in the same
     way that 'with' is related to 'attach'.


     capture.output(..., file = NULL, append = FALSE)


     ...: Expressions to be evaluated.

Tuesday, March 25, 2014

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.

Monday, March 17, 2014

Fwd: Mac print to PDF without margin

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

Thursday, March 6, 2014

backref put page number in the reference list


Friday, January 24, 2014

delete all unread message in gmail in a second

  1. Input in:inbox is:unread to the search box:

  2. select all and then delete.