error: could not find function install_github for R version 2.15.2

devtools, linux, r, redhat

Solution

`install_github` is a function of the devtools package. You have to install and load devtools before using `install_github`:

install.packages("devtools")
library("devtools")
install_github("youruser/yourrepo")

Problem

I'm having multiple problems with R right now but I want to start asking one of the most fundamental questions. I want to install GitHub files into R, but for some reason the `install_github` function doesn't seem to exist. For example, when I type: ``` install_github("devtools") ``` I get ``` error: could not find function install_github ``` The `install_packages` function worked perfectly fine. How can I solve this problem? To add, I want to ask whether there is a way to upgrade R, since version 2.15.2 doesn't seem to be compatible for most of the packages I want to work with. I'm currently using Linux version 3.6.11-1 RedHat 4.7.2-2 fedora linux 17.0 x86-64. I checked the CRAN website but they seemed to have the most unupdated versions of R (if that is even possible) that dates all the way back to '09. I would seriously love to update myself from this old version of R. Any advice on this too?

Original source