Curl and RCurl getURL

I wanted to use the getURL function from RCurl so I tried to install the RCurl package.  I received this error Cannot find curl-config. In order to clear the error, I had install curl (apt-get install curl).  This didn't work so I ended up trying (libcurl4-gnutls-dev).  I then had to restart R and install R package bitops.  I ran library(RCurl) just to be sure.  getURL is now working.