# Seamless way to reinstall all your R package after a major update

# Where are your packages installed?
libpath = "~/R/x86_64-pc-linux-gnu-library/"

# Find the latest R version before we updated
R_versions = list.files(libpath)
latest_R_version = max(as.numeric(R_versions))

# List all packages installed in the latest version
list_packages = list.files(paste0(libpath, latest_R_version))

# Install them
install.packages(list_packages, dependencies = T)