Some problems about duplicated packages

The libraries are in :

 R
.libPaths()

 I don't know why but I should set these permissions to allow some packages to be updated.
sudo chmod -R 777 /usr/lib/R/library
sudo chmod -R 777 /usr/share/R
sudo chmod -R 777 /usr/lib/R/site-library
sudo chmod -R 777 /usr/local/lib/R/site-library

To have the list of duplicated packages:
library(HelpersMG)
duplicate.packages()

To remove some packages, I was forced to run R as root. I don't know why.
To do this from Rstudio: (replace PASSWORD, PKG and LIB what what is needed.

system("echo PASSWORD | sudo -k -S R -e 'remove.packages(\"PKG\", lib=\"LIB\")'")

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