Content Introduction
1 Part three test questions
2, The fourth part of the first lesson: Compressed files, decompression without pressure
Part Three quiz questions
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
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
redirect Symbol >> Do you create a file when the file does not exist?
A. Will
B. Will not
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
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
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
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
How can I pause a process?
A. Ctrl + Z
B. Ctrl + C
C. Halt
D. Nohup
How do I go to the foreground to run a process?
A. FG
B. BG
C. BC
D. Top
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
C
C
A
A
C
A
C
A
A
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
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The third part of the "Linux Discovery Journey" Quiz