[R] knitr and tinytex

[Steven T. Yen]

Dear tinytex users

I install knitr and tinytex with the following line commands in RStudio 
and it seems to work:

install.packages("knitr")
install.packages('tinytex')

In the long past I was told to also run the following lines but now they 
do not seem to be needed.
#update.packages(ask = FALSE, checkBuilt = TRUE)
#tinytex::tlmgr_update()
#tinytex::reinstall_tinytex()

Would running the first two lines above be adequate? Is it also OK run 
run in RStudio by Tool -> Install.packages? Thanks you!