Shulou(Shulou.com)05/31 Report--

This article introduces the relevant knowledge of "how to judge the existence of users in linux". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Linux's method to judge whether a user exists: 1. Change "read-p" please input a username: "username..." Save as test.sh;2 and run "sh test.sh".

This article operating environment: linux5.9.8 system, Dell G3 computer.

How does linux determine whether a user exists?

Linux determines whether a user exists:

#! / bin/bashread-p "please input a username:" usernameif id-u $username > / dev/null 2 > & 1; then echo "user exists" else echo "user does not exist" fi

Save the above memory as test.sh, and then run it with sh test.sh

This is the end of the content of "how linux determines whether a user exists". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.