what are the uses of filters?

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what are the uses of filters?..

Answer / satish

A filter is a program/command that gets most of its data
from its standard input and writes its main results to its
standard output.

Following are some filter commands.
awk,cat,comm,cut,expand,compress,fold,grep,head,tail,sed,sh,
tee,uniq,wc

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what are the uses of filters?..

Answer / lakshmi

To filter the data from existing file.We can use filters to
extract the data according to our need.

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what are the uses of filters?..

Answer / sekhar

to filter the data in existing file.

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