How to rename files in linux (regular expression)

Here is a very useful link to this question, just need to download their perl script and then use perl regular expression to rename file!!

It's a very good post, and I strongly recommend it!

http://www.cyberciti.biz/tips/renaming-multiple-files-at-a-shell-prompt.html#perlscript

nucleotide degenercy code

ref: http://www.le.ac.uk/bl/phh4/nucredun.htm

A = Adenine

C = Cytosine

T = Thymine

G = Guanine

U = Uracil

N = A, G, C or T = aNy

R = A or G = puRine (9-ring with 4 N and 5 C)

Y = C or T (also U) = pYrimidine (6-ring with N at positions 1 and 3)

M = A or C = aroMatic

S =  G or C 

W = A or T 

 K = G or T = Keto 

V = A, C or G = Not T (letter after)

D = A, G or T = Not C

H = A, C or T = Not G

B = C, G or T = Not A

sample from discrete distribution in R

 Basically use sample function:

refer to this very useful blog:

http://msenux.redwoods.edu/math/R/SampleDiscrete.php