How to write shell scripts in linux?

How to write shell scripts in linux? In response to this problem, today's Xiaobian summarizes this article about shell scripting, hoping to help more friends who want to solve this problem find a simpler and easier way.

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

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

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

4. Write the script createuser.sh to achieve the following functions: use a user name as a parameter, if the user with the specified parameter exists, it will be displayed, otherwise it will be added; display the added user ID number and other information;

5. Write scripts that generate scripts in basic format, including author, contact information, version, time, description, etc.;

[root@www ~]# vim ~/.vimrc

About the method of writing shell scripts to share here, I hope the above content can be of some help to everyone, you can learn more knowledge. If you like this post, share it with more people.