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modified post 2fc126f3 by Anonymous on Mon 26th Jul 2021 15:08
original post 823ff010 by Anonymous on Mon 26th Jul 2021 15:05
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#!/bin/bash

	1	+	#!/bin/bash
1	4		#
2	5		# busysleep.sh
3	6		#
4	7		# like POSIX sleep(1), but uses CPU time
5	8
6	9		set -o errexit
7	10
8	11		typeset -i start_s
9	12		typeset -i sleep_time=$1
10	13
11	14		for ((start_s=SECONDS ;
12		-	(SECONDS-start_s) < sleep_time ;
	15	+	(SECONDS-start_s) <= sleep_time ;
13	16		)) ; do
14	17		(( 1 ))
15	18		done
16	19
17	20		exit 0
18	21
19	22