1#!/bin/sh
 2# its like hyperfine but not written in rust and also worse but it has everything i need so
 3#
 4#     usage: 
 5#     fine 'command'
 6#     fine -t 20 'command'
 7
 8set -eu
 9
10times=10
11
12usage() {
13	printf 'usage: %s [-t times] command\n' "${0##*/}" >&2
14	exit 2
15}
16
17while getopts 't:' opt; do
18	case $opt in
19	t)
20		times=$OPTARG
21		;;
22	*)
23		usage
24		;;
25	esac
26done
27shift $((OPTIND - 1))
28
29[ "$#" -eq 1 ] || usage
30
31case $times in
32	''|*[!0-9]*)
33		usage
34		;;
35esac
36
37[ "$times" -gt 0 ] 2>/dev/null || usage
38
39cmd=$1
40
41now() {
42	date +%s.%N
43}
44
45i=1
46while [ "$i" -le "$times" ]; do
47	printf 'run %d/%d\n' "$i" "$times" >&2
48	start=$(now)
49	sh -c "$cmd" >/dev/null 2>&1
50	end=$(now)
51	awk -v start="$start" -v end="$end" 'BEGIN { printf "%.6f\n", end - start }'
52	i=$((i + 1))
53done | awk '
54{
55	sum += $1
56	n++
57}
58{
59	printf "run %d: %.6fs\n", n, $1
60}
61END {
62	if (n == 0)
63		exit 1
64	printf "avg: %.6fs\n", sum / n
65}
66'