Kiểm tra và tạo user trên centos sử dụng bash shell - Create user using bash shell

Step 1. Create user list  ( Ex : id-list.txt)
Step 2 : Create file as below:
#!/bin/bash
for user in `cat id-list`
do
    check=$( cat /etc/shadow | cut -f1 -d ":" | grep $user )
    if  [[ $user != $check ]]
    then
     {
         useradd -m $user
         passwd $user <pass
         echo ""
         echo "Create User $user sussess"
      }
     else
       {
        echo "User $user already exist"
        }
done

Step 3: chmod for file : chmod +x ....