linux创建添加用户脚本,RHCE认证考试-创建一个添加用户脚本

RHCE认证考试中可以使用以下脚本来创建和添加用户：
#!/bin/bash

# This script adds a new user to the Linux system.

# Check if the user is root
if [[ $EUID -ne 0 ]]; then
echo "This script must be run as root"
exit 1
fi

# Prompt for the username
read -p "Enter the username: " username

# Check if the username already exists
if id "$username" >/dev/null 2>&1; then
echo "User already exists"
exit 1
fi

# Prompt for the password
read -sp "Enter the password: " password

# Create the user
useradd $username -m -s /bin/bash

# Set the password for the user
echo "$username:$password" | chpasswd

# Print the username and password
echo "User $username created with password $password"
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这个脚本会提示用户输入用户名和密码，并检查用户是否已经存在。如果用户不存在，脚本会创建一个新用户并设置密码。最后，脚本会输出新用户的用户名和密码。