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Describe how a user can combine applications with each other and with utilities to perform useful tasks in UNIX. Specifi...

Describe how a user can combine applications with each other and with utilities to perform useful tasks in UNIX. Specifically, what mechanisms and concepts in the UNIX operating system enable this? Give examples.

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Pipes :

pipes is an unix mechanism to send the output of one program as input to the other program and can start

executing one after the other.

We use '|' symbol for Pipes.

Example:

Suppose we want search for files which contain "check" in them and put that into a file called results.txt

By using pipes we can do it in the following way :

ls | grep "check" | cat > results.txt

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