Answer Posted / chets

SED (which stands for Stream EDitor) is a simple but
powerful computer program used to apply various
pre-specified textual transformations to a sequential stream
of text data.
It reads input files line by line, edits each line according
to rules specified in its simple language (the sed script),
and then outputs the line.

AWK is a complete pattern scanning and processing language,
it is most commonly used as a Unix command-line filter to
reformat the output of other commands.
For example, to print only the second and sixth fields of
the date command (the month and year) with a space
separating them, at the Unix prompt, you would enter:
date | awk ‘{print $2 ” ” $6}’

What does the command ' $who | sort –logfile > newfile' do?

1245

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Write a command to display a file’s contents in various formats?

1160

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What's a command word?

1120

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how to sort the content of the file based on numeric values

1736

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How can you see the command line history?

1087

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Is there a way to erase all files in the current directory, including all its sub-directories, using only one command?

1348

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What is the behavioural difference between cmp and diff commands?

1220

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What is command statement?

1112

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Give the command for finding the current date.

1048

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What is the use of sed command in unix?

1154

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Why is grep called grep?

1239

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How do I search for text in vi?

999

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Explain mount and unmount command.

1154

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What is grep and how do you use it?

1066

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What is the difference between grep and grep?

1071

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