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#!/bin/bash# spin.sh -- show a spinner (for coverage test)# Copyright (C) 2014-present  SheetJS
wpid=$1delay=1str="|/-\\"while [ $(ps -a|awk '$1=='$wpid' {print $1}') ]; do  t=${str#?}  printf " [%c]" "$str"  str=$t${str%"$t"}  sleep $delay  printf "\b\b\b\b"done