Learn the correct MVS command to hold 10 lines of console output. Discover the syntax and usage of the ‘k’ command with the ‘a’ parameter in this comprehensive guide.
Table of Contents
Question
MVS command to hold 10 lines of console
A. k e,10
B. k 10
C. k a,10
D. None of these
Answer
The correct answer to the question “MVS command to hold 10 lines of console” is:
C. k a,10
Explanation
In MVS (Multiple Virtual Storage), the ‘k’ command is used to control the console display. The ‘a’ parameter, when used with the ‘k’ command, allows you to specify the number of lines to hold on the console screen.
The syntax for this command is:
k a,nn
Where ‘nn’ represents the number of lines you want to hold on the console screen. In this case, the question asks for the command to hold 10 lines, so the correct command would be:
k a,10
This command instructs the system to hold the last 10 lines of console output on the screen. As new messages appear on the console, the oldest lines will be pushed off the screen, maintaining a display of the 10 most recent lines.
It’s important to note that the other options provided in the question are incorrect:
- Option A: ‘k e,10’ is incorrect because the ‘e’ parameter is not valid for holding lines on the console.
- Option B: ‘k 10’ is incorrect because it lacks the necessary ‘a’ parameter to specify the action of holding lines.
- Option D: ‘None of these’ is incorrect because option C provides the correct answer.
Understanding the proper syntax and usage of MVS commands is crucial for effectively managing and interacting with the mainframe environment.
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