一、有时候只是简单的获取下时间戳,不想在python解释器的交互模式下再去执行python代码,如何实现呢?
以循环输出多行为例: (1)第一种方式: python -c "exec(\"import sys\nfor r in range(3): print 'arun'\")" arun arun arun (2)第二种方式: (echo "import sys" ; echo "for r in range(3): print 'arun'") | python arun arun arun
二、实践
showtime () {
(
echo "import datetime"
echo 'print str(datetime.datetime.now()).split(".")[0].replace("-","").replace(":","").replace(" ","")'
) | python
}
效果如下:
showtime 20190302100502