COMPUTER SCIENCE AND ENGINEERING
UNIX
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Multiple Choice
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Detailed explanation-1: -The first command writes the output to standard output and the second command reads standard output from the previous command as standard input.
Detailed explanation-2: -Redirection is done using either the “>” (greater-than symbol), or using the “|” (pipe) operator which sends the standard output of one command to another command as standard input. As we saw before, the cat command concatenates files and puts them all together to the standard output.
Detailed explanation-3: -One of the most powerful shell operators is the pipe ( | ). The pipe takes output from one command and uses it as input for another. And, you’re not limited to a single piped command-you can stack them as many times as you like, or until you run out of output or file descriptors.
Detailed explanation-4: -Pipe is used to combine two or more commands, and in this, the output of one command acts as input to another command, and this command’s output may act as input to the next command and so on. It can also be visualized as a temporary connection between two or more commands/ programs/ processes.