Shulou(Shulou.com)06/03 Report--

1. Count the number of users whose default shell is not / sbin/nologin in the / etc/passwd file, and display all the users.

2. Find out the user name, UID and shell type of the maximum UID of the user

3. Count the number of connections to each remote host IP that is currently connected to this machine, and sort them from large to small

4. Write a script createuser.sh to achieve the following functions: use a user name as a parameter, if the user of the specified parameter exists, show its existence, otherwise add it; display information such as the id number of the added user

5. Write a script that generates the basic format of the script, including author, contact information, version, time, description, etc.

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