How to Change .libPaths() permanently in R?

Question

Whenever I change the library path order using the .libPaths() function, it reverts back to the default if I restart R. How can I change this permanently? I am

Answer 1

find the Rprofile file (no dot) in R installation folder

find -name Rprofile

#Getting something like:
#lib/R/library/base/R/Rprofile

Open the file and search for:

invisible(.libPaths(c(unlist(strsplit(Sys.getenv("R_LIBS"), ":")),
                      unlist(strsplit(Sys.getenv("R_LIBS_USER"), ":") )
                      )))

comment other paths and add your desired path

invisible(.libPaths(c(#unlist(strsplit(Sys.getenv("R_LIBS"), ":")),
                      #unlist(strsplit(Sys.getenv("R_LIBS_USER"), ":") )
                      "/home/users/username/R/4.0.1/lib/R/library" # desired path
                      )))

This can be useful also: (for .bashrc file)

export R_LIBS='/home/users/username/R/4.0.1/lib/R/library'
export R_LIBS_USER='/home/users/username/R/4.0.1/lib/R/library'