io

I had the need to implement pure bash solution for IO usage monitoring without any tools installed on OS, do this fast and accurately. After little reaserching about /sys/ filesystem the next script was born: #! /bin/bash SLEEP=0.01 declare -A ops=() for dev in /sys/block/*;do dev=${dev##*/} ops+=( [${dev}]=0 ) done for i in $(seq 1 100);do while read _ _ drive _ _ _ _ _ _ _ _ tasks _ _;do [ -n "${drive}" ] || continue case ${tasks} in 0|[!...