search for: fixed2013

Hello. I am new to R, so my question/problem might be very basic, but I cannot figure out how to solve it. So, I would really appreciate your help. I would like to rename a variable in a very large file (181GB) called "2013.xdf" that is saved on my external hard drive. I tried running the following code to rename variable # 2 in the file and save this change, which produced some