MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

UNIX

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Pipes are used for redirecting ____
A
Output to file
B
Output to Standard output
C
Output of one command to input of another command
D
All the above
Explanation: 

Detailed explanation-1: -You can connect two or more commands so that the standard output of one command is used as the standard input of another command. A set of commands connected this way is known as a pipeline. The connection that joins the commands is known as a pipe.

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.

Detailed explanation-3: -The | command is called a pipe. It is used to pipe, or transfer, the standard output from the command on its left into the standard input of the command on its right. # First, echo “Hello World” will send Hello World to the standard output.

Detailed explanation-4: -The PIPE command is a powerful and flexible command that lets you issue commands and manipulate messages in a pipeline. Many of the functions available in the HLL environment as commands and service routines are also available through the PIPE stage commands.

Detailed explanation-5: -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.

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