Work out the mean (average), min, max, median and quartiles of number in a plain text file using R

summary.sh

cat > data.csv <<HERE
4
5
6
7.9
HERE

r --slave -e 'summary(scan(file="data.csv"))'

## Results in:
# Read 4 items
#   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
#  4.000   4.750   5.500   5.725   6.475   7.900