Read a text file in R line by line

Here is the solution with a for loop. Importantly, it takes the one call to readLines out of the for loop so that it is not improperly called again and again. Here it is:

fileName <- "up_down.txt"
conn <- file(fileName,open="r")
linn <-readLines(conn)
for (i in 1:length(linn)){
   print(linn[i])
}
close(conn)

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