username="testuser"
groupname="testgroup"

if getent group $groupname > /dev/null; then
	echo "组${groupname}已存在,跳过创建"
else
	sudo groupadd $groupname
	echo "${groupname}创建成功"
fi

if id -u $username > /dev/null 2>&1; then
	echo "用户${username}已存在,跳过创建"
else
	sudo useradd -m -s /bin/bash $username
	echo "${username}用户创建成功"

	echo "$username:123456"|sudo chpasswd
	echo "密码已设置为123456"
fi

sudo usermod -a -G $groupname $username

id $username