单选题What is the output when the following shell script executes？（） cat<；<；foobar Hello foobar foobarAThe contents of the file foobar.BHelloCNo output but a file named foobar is created.DHello foobarEHello foobar foobar
题目
单选题
What is the output when the following shell script executes？（） cat<；<；foobar Hello foobar foobar
A
The contents of the file foobar.
B
Hello
C
No output but a file named foobar is created.
D
Hello foobar
E
Hello foobar foobar