Easy way to re install all packages after updating R - statnet/computing GitHub Wiki

This example is based on updating from a Windows machine. You can modify as needed for your environment.

lib_loc <- "~/R/win-library/3.6"  # modify with your old library path  
to_install <- unname(installed.packages(lib.loc = lib_loc)[, "Package"])  # makes a list of your packages
to_install  # look at the list
install.packages(pkgs = to_install) # re-install for the current version of R