單項(xiàng)選擇題

Given the following script， why does the output come out as an empty line instead of "dog"？（）

A.The $VAR variable was not exported
B.The $VAR should have been set as VAR
C.dog needs double quotes around it when setting $VAR
D.The { } should not be around VAR in the echo command

你可能感興趣的試題

單項(xiàng)選擇題

Review the following program.

What is the possible problem？（）

A.#!/bin/ksh line is missing
B.Variable name VAR is not properly initialized
C.Loop variable is not incremented inside the loop
D.Loop variable is not decremented inside the loop

單項(xiàng)選擇題

A system administrator has a server that is performing poorly. The vmstat command identifies that high CPU usage is the problem. Which of the following commands can be used to identify the eight most active processes running on the server？（）

A.ps -ef -t8
B.sar -u -p 8
C.vmstat -t 8
D.topas -p8 -n0 -d0

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Given the following script， why does the output come out as an empty line instead of "dog"？（）

你可能感興趣的試題

Review the following program. What is the possible problem？（）

A system administrator has a server that is performing poorly. The vmstat command identifies that high CPU usage is the problem. Which of the following commands can be used to identify the eight most active processes running on the server？（）

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Given the following script， why does the output come out as an empty line instead of "dog"？（）

Review the following program.

What is the possible problem？（）

A system administrator has a server that is performing poorly. The vmstat command identifies that high CPU usage is the problem. Which of the following commands can be used to identify the eight most active processes running on the server？（）