Which command is used to display the first 10 lines of a file in Linux?

Which command is used to display the first 10 lines of a file in Linux?

• A. head
• B. tail
• C. cat
• D. echo

Answer: (A)

The command used to display the first 10 lines of a file in Linux is 'head'. This command is specifically designed to output the beginning portion of files, and by default, it shows the first 10 lines unless otherwise specified. For instance, when you use the command followed by a filename, like `head filename.txt`, it will return the first 10 lines, making it a quick and efficient way to preview the content of a file. Users can also customize the number of lines displayed by using the `-n` option, allowing for flexibility when working with files of different sizes. The other commands serve different purposes: 'tail' shows the last 10 lines of a file, 'cat' concatenates and displays the entire content of a file, and 'echo' is used to print text or variables to the terminal. Therefore, 'head' is uniquely suited for displaying the initial lines of a file, confirming its role in providing the correct result for the question.

The command used to display the first 10 lines of a file in Linux is 'head'. This command is specifically designed to output the beginning portion of files, and by default, it shows the first 10 lines unless otherwise specified.

For instance, when you use the command followed by a filename, like head filename.txt, it will return the first 10 lines, making it a quick and efficient way to preview the content of a file. Users can also customize the number of lines displayed by using the -n option, allowing for flexibility when working with files of different sizes.

The other commands serve different purposes: 'tail' shows the last 10 lines of a file, 'cat' concatenates and displays the entire content of a file, and 'echo' is used to print text or variables to the terminal. Therefore, 'head' is uniquely suited for displaying the initial lines of a file, confirming its role in providing the correct result for the question.