calculate_avg_min_max_percentile.sh

#!/bin/bash
percentile=90
input="put your line based number file"
tmp="tmpfile"

total=$(cat "$input" | sort -n | tee "$tmp" | wc -l)
echo "min: $(head -n 1 "$tmp" | tail -n 1)"
echo "max: $(tail -n 1 "$tmp" | tail -n 1)"
# (n + 99) / 100 with integers is effectively ceil(n/100) with floats
percentile_rank=$(((total * percentile + 99) / 100))
percentile_score=$(head -n $percentile_rank "$tmp" | tail -n 1)
echo "p$percentile: $percentile_score"
sum=$(paste -sd+ "$tmp" | bc)
echo "avg: $(($sum/$total))"

rm "$tmp"