Linux bash打印程序运行时间

#!/bin/bash
function ShowTime()
{
 endTime=`date +'%Y-%m-%d %H:%M:%S'`
 start_seconds=$(date --date="$startTime" +%s);
 end_seconds=$(date --date="$endTime" +%s);
 usedTime=$((end_seconds-start_seconds))
 # 超过2秒用红色字体显示,1-2s用黄色字体显示,1s以内用绿色字体显示
 if [[ $usedTime -ge 2 ]]
 then
 echo -e "\033[31mUsed time:$usedTime s \033[0m"
 elif [[ $usedTime -ge 1 ]]
 then
 echo -e "\033[33mUsed time:$usedTime s \033[0m"
 else
 echo -e "\033[32mUsed time:$usedTime s \033[0m"
 fi
}
startTime=`date +'%Y-%m-%d %H:%M:%S'`
echo "Start time:$startTime"
# 执行程序
sleep 1
ShowTime
作者:cxduan原文地址:https://segmentfault.com/a/1190000020379792

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