Answer Posted / biswajit parida

As we know every output of a command in unix is treated as
a file.
so while we are using command we need have to check three
things
1.command
2.option
3.argument
Syntax:<command> [option] <argument>

pipe is the mechanisim to running the filtered output, it
takes the output from left hand
side command and used it as a argument in right hand side.

Example:ls|grep "abc.txt"

In this example the output of the ls is treated as a
file and it takes as argument for
right hand side command.

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