Linux bash 计时器
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时间：2020-09-18 09:23:44 来源:igfitidea点击:
Linux bash Timer
提问by DopeGhoti
Ok, stupid newbie question here. I thought I was making a countdown timer. This is supposed to count down from 5 and once it is at 0 then execute the echo "time is up clown" then end. What am I doing wrong here?
好吧，愚蠢的新手问题在这里。我以为我在制作倒数计时器。这应该从 5 开始倒计时，一旦为 0，则执行回声“时间到了小丑”然后结束。我在这里做错了什么？
seconds=5
date1=$((`date +%s` + $seconds));
while [ "$date1" -ne `date +%s` ]; do
if (!$date1 -lt ((`date +%s` + $seconds)+1)); then
echo "time is up clown";
break;
fi;
echo -ne "$(date -u --date @$(($date1 - `date +%s` )) +%H:%M:%S)\r";
done
回答by DopeGhoti
#!/bin/bash
SECS=5
while [[ 0 -ne $SECS ]]; do
echo "$SECS.."
sleep 1
SECS=$[$SECS-1]
done
echo "Time is up, clown."
