test(unitproc):bkFreqWrite: Implem. basic mapfile reading

[BK-2020-03.git] / unitproc / bkFreqWrite

#!/bin/bash
# Desc: Writes stdin to disk every 5 minutes

yell() { echo "[$(date --iso-8601=ns)]:$0: $*" >&2; }      #o Yell, Die, Try Three-Fingered Claw technique
die() { yell "$*"; exit 111; }     #o Ref/Attrib: https://stackoverflow.com/a/25515370
try() { "$@" || die "cannot $*"; } #o

declare -a buffer

yell "Script started."

mapfile -s4 -n5 buffer

yell "Contents of buffer:${buffer[@]}";

for element in "${buffer[@]}"; do
    echo "$element";
    sleep 1;
done;

yell "Script completed."
exit 0;