[R] Generating random normal distribution with mean 0 and standard deviation 1

[Neuro LeSuperHéros]

Hello,

This must be really simple, but I can't find it on R Site search.  I need to 
generate a random normally distributed series with mean 0 and sd 1. In 
Matlab, this code is randn(n).

The closest I found is runif(20,-1,1) but this forces a maximum and a 
minimum, and there's no way to specify a standard deviation of 1.

>sd(runif(20,-1,1))
[1] 0.578164