Hello, I was trying to install cummerBund in my system (Ubuntu 64-bit)  using command

• source("https://bioconductor.org/biocLite.R")
• biocLite("cummeRbund")

After downloading all modules it shows like:
"'lib = "/usr/lib/R/library"' is not writable
Would you like to use a personal library instead?  (y/n)" and it continued typing "y" and it finished installation after showing the message: "The downloaded source packages are in
    ‘/tmp/Rtmpu8kknu/downloaded_packages’". But when I checked by typing "library(cummeRbund)" or "library()", it is not there in the list of R libraries. Please help me to overcome this problem..!!

Thanks in advance

Remember that R is case-sensitive and R package authors like to use weird capitalization especially of the letter 'R'. I think you want library("cummeRbund").