Linux O & M engineer interview, linux O & M Engineer

Linux O & M engineer interview, linux O & M Engineer

I. Linux operating system knowledge

1. What are common Linux releases? Which one are you best? What is its official website? Which one are you good?

 

2. What are the detailed steps for Linux boot process? After the system is installed, how can I crack the password I forgot?

 

3. What is the partition standard for Linux server systems in enterprises? (Hard disk is 300 GB, memory is 16 GB)

 

4. What should I do if I suddenly find that the Linux system file is read-only one day? Complete procedure.

 

5. How can I install 50 Linux systems on a DVD disk? Think about it.

 

6. I installed a Linux system on a virtual machine and suddenly wanted to clone a server. After cloning, I found that I could not access the internet. What should I do?

 

7. What is the path of the Linux Nic configuration file? Which of the following conditions must be met for servers to access the Internet? What do I need to configure?

 

8. What software is generally used for remote linux server? Through which to upload and download files?

 

9./What is the main function of the mnt directory? /What is the relationship between the root directory and the root user? What is the connection between the/root directory and the/boot directory?

 

10. What happens when rm-rf * is executed due to misoperations one day? For example.

 

Ii. Linux commands and file operations

1. Create the test.txt file in the/tmp/directory with the content: Hello, World! And write it out with a command.

 

2.add the execution permission to the test.txt file except the owner and write the file in numbers.

 

3.use the VI command to edit test.txt. How to jump to the last line, the first line, the first line, and the last line, insert the next line in the cursor line, copy 5 lines, and delete 10 lines, search for jingfeng characters and replace jingfeng with jfedu.net.

 

4. Search for a file with txt ending in linux, which has not been modified for 30 days and is larger than 20 KB and has the execution permission, and back up the file to the/data/backup/directory.

 

5.when test.txtbelongs to the root user and the group is abc, set test.txt to abc and the group to root, and write the command.

 

6. Write down the operating methods for changing the Linux Startup level to character mode and taking effect permanently.

 

7. Create a date folder for the current day under the/tmp directory at each startup (note: the current date is represented by 'date + % Y % m % D ')

 

8. How to view the file content? What are the commands? View lines 1st to 3 of the file and the last line of the file.

 

9. view the linux Server IP address command, and only display the line containing the ip address.

 

10. What is the command to add normal user test to the root group?

 

Iii. Linux disk and software management operations

1. How to add a new 50 GB hard disk to the linux server system as a separate partition and use it? What steps are required?

 

2. If you have a Kingston USB flash drive, you need to upload an index.html file to the server/var/www/html/directory.

 

3. There is a mobile hard disk with GB Data on it. How can I quickly cp to a linux server?

 

4. the disc contains a httpd-2.2.15.xx.rpm package, how to mount and install it?

 

5. Use the rpm command to install, uninstall, delete, and update the ntp-0.7.12.x86_64.rpm package.

 

6./var/www/html/is the release directory of the website. How do I automatically back up the directory at every day and write down the operation steps?

 

7. Use the tar command to package and compress the/root directory, move it to/tmp, and set its permissions to read-only by others.

 

8. What is the difference between the Yum command and the rpm command? How to install a dependent package using rpm?

 

9. In this month, a test.txt file is created every two hours from to every morning. The content is OK. How can this problem be solved?

 

10. Transfer the files larger than 100 K under the/usr/local/test directory to the/tmp directory.

 

11. Briefly describe how raid0 raid1 raid5 works and its features.

 

12. view the processes that occupy port 8080.

 

Iv. Linux service configuration and management

1. Write out the two working modes of apache2.X and their working principles. How can I view the modules currently supported by apache and view the working mode?

 

2. nfs cannot be mounted on the client in Linux. How can I troubleshoot it?

 

3. a dhcp server has been deployed in Linux and the client cannot obtain the IP address. How can this problem be solved?

 

4. What are common FTP software? Which of the following statements is most commonly used in Linux? How can I share a resource to allow others to access it using the user name and password?

 

5. How can I disable anonymous FTP user logon? How does one access the ftp server through the command line?

 

6. Where is the publishing directory of the ApacheWEB server?

 

7. How many modes does the ApacheWEB server work in?

 

8. What is the purpose of the MySQL server? Can Apache and mysql be installed on one machine? How do I view the ports and processes of apache and mysql?

 

9. How can I deploy four websites on a virtual machine with the domain names www.a1.com test.a1.com www.a2.com test.a2.com?

 

10. Assume that the log file generated by Apache is named access_log. When apache is running, run the mv access_log access_log.bak command. After the command is executed, where will the new apache Log be printed? Why?

 

11. We all know that the FTP protocol has two working modes. What is their approximate workflow?

12. The file system to be loaded is read from during Linux kernel boot.

 

13. write out the ftp http dns snmp pop3, dhcp, nfs, mysql, samba and other services that are commonly used ports of the following services.

 

14. What are the commands for creating a database in Mysql, creating a table, and inserting a statement?

 

15. Mysql BACKUP command? How does Mysql authorize the root user to access jfedu with the password jfedu.net? Write the command?

 

16. What should I do if I forget my password for Mysql?

 

17. What skills and professional qualities do Linux O & M engineers need?