Answer Posted / sivasankar.s

cat command displays the contents of the file.

Ex :
$ cat fruits.txt
apple
orange
grapes

touch command changes the modified date and time of the
file.

before use touch command
$ls -ltr
-rw-r--r-- 1 s aaa 20 Oct 29 16:39 fruits.txt

$ touch fruits.txt

$ls -ltr
-rw-r--r-- 1 s aaa 20 Oct 29 16:51 fruits.txt

What is the use of tee command?

1182

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Who invented grep?

1176

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Who wrote grep?

1076

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What is pipe command in unix?

1312

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hw will u use awk in replacing cahrs and files

3254

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What is the use of egrep command in unix?

1202

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What is grep and how do you use it?

1124

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What is command substitution?

1391

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How do I search for a file in unix command?

1028

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What does awk stand for?

1096

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How do I use grep to search for a file?

1069

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What is the comma to show the space allocation of files?

1100

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What will the following command do?

1132

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What do chgrp command do?

1233

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Explain the steps that a shell follows while processing a command.

1247

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