函数添加用户

利用函数实现用户的添加

USER=$1

USERADD() {

if id -u $USER &>/dev/null;then

echo "user $user exist"

return 1

else

return 0

}

USERADD

if [ $? -eq 0 ];then

useradd $user

echo $user | passwd --stdin $user &>/dev/null

echo "user $user add finished"

fi