linux 判断一个用户是否存在

Posted 2022-03-23 dafei4

#!/bin/bash

read -p "please input a username:" username

if id -u $username >/dev/null 2>&1; then
        echo "user exists"
else
        echo "user does not exist"
fi

把上面内存保存为 test.sh , 然后 sh test.sh 运行