When I try to run library (Rcmdr), it tells me to install RcmdrMisc, then I run install.packages ('RcmdrMisc', dependencies = TRUE) and it gives me the error that I attached in the image.
It looks like your system is missing whatever package provides the file libgfortran.so.4. On my computer, which runs Archlinux, the package is called gcc-libs. The package name may differ on your distro. You need to figure out the name of the package and install it.
