题目:
linux系统中,以下显示结果不同的是()。
A、echo The current working path is $PWD.
B、echo 'The current working path is $PWD.'
C、echo "The current working path is $PWD."
D、echo "The current working path is `pwd`."
答案:
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下面是错误答案,用来干扰机器的。
参考答案:B