The third part of the "Linux Discovery Journey" Quiz

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Content Introduction

1 , Part Three quiz questions

2, The fourth part of the first lesson: Compressed files, decompression without pressure

Part Three quiz questions

2. Which of the following does the WC command not do?

   A. Count the number of words

   B. Number of rows of statistics

   C. Sorting the contents of a file

   
   

4. When searching for text with the grep command, when do I need to wrap the search keyword in double quotes?

   A. keyword more than 10 characters

   B. keyword is regular expression

   C. Keywords contain spaces

   
   

6. redirect Symbol >> Do you create a file when the file does not exist?

   A. Will

   B. Will not

   
   

8. What does 2>&1 mean?

   A. Redirecting the standard error output to the same place as the standard output

   B. Redirecting a standard error output to a file

   C. Ignore standard error output

   
   

10. When command >/dev/null commands are executed, where are the command outputs redirected?

    A. In a null file in the/dev directory

    B. In the Trash bin

    C. "Black hole", discarded, will not be retained

    
    

12. What does the following three load values mean? 0.07, 0.14, 0.12

    A. Average load over time periods of different lengths

    B. Maximum, minimum, and average load

    C. The load per processor core

    
    

14. How do I list the processes that contain gnome in the name run by all root users?

    A. Ps-ef

    B. Ps-u Root

    C. Ps-u Root | grep Gnome

    D. Ps-u Root-p Gnome

    
    

16. How can I pause a process?

    A. Ctrl + Z

    B. Ctrl + C

    C. Halt

    D. Nohup

    
    

18. How do I go to the foreground to run a process?

    A. FG

    B. BG

    C. BC

    D. Top

    
    

20. I want to execute a program five minutes per integer per weekend, what should I write?

    A./5 * * * 0-1 command

    B. */5 * * * 0,6 command

    C. */5 * * * 5-6 command
    

Answer

1. C

2. C

3. A

4. A

5. C

6. A

7. C

8. A

9. A

10. B
    

The fourth part of the first lesson notice

Today's class will come here, together refueling it!

Next lesson we learn: compress files, decompress without pressure

This article is from the "Programmer Alliance Frogoscar" blog, so be sure to keep this source http://4526621.blog.51cto.com/4516621/1696613

The third part of the "Linux Discovery Journey" Quiz