即将离开知乎
您即将离开知乎,请注意您的帐号和财产安全。
https://askubuntu.com/questions/12098/what-does-outputting-to-dev-null-accomplish-in-bash-scripts
您即将离开知乎,请注意您的帐号和财产安全。
https://askubuntu.com/questions/12098/what-does-outputting-to-dev-null-accomplish-in-bash-scripts