Write a grep (or grep) command that selects the lines from a file that have exactly three characters.

24 Answers   Mac, Nokia,

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How to view the hidden files in /etc directory?

10 Answers  

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hi i have directories within the directory. Now i want to copy the directory along with all directories included in it to one location by using copy command? what is the command

2 Answers   ACS, Span Systems,

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A file has 1000 lines and i want to display only 1st line how to do it? pls ..tel me

7 Answers   CTS,

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What is the command to check ports active in UNIX?

4 Answers   Accenture, IBM,

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what is the use of ls -l command & what is the information it gives about user ?

5 Answers  

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what is tar command and what are the different types of tar commands?

5 Answers  

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How do you repeat a command in terminal?

0 Answers  

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their is a file1,file2 and i want to append file1 data to file2?

9 Answers   IBM,

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what is the default permission for /etc/shadow file in UNIX

2 Answers   Wipro,

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What is the use of cut command in unix?

0 Answers  

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What is the command to find hidden files in the current directory?

0 Answers  

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