Bash Shell Scripting- Insertion and Deletion with sed command

This video tutorial covers the use of the set command for file manipulation, focusing on insertion and deletion operations. It explains the syntax and flags used for these operations, such as 'I' for inserting before a line, 'A' for inserting after a line, and 'D' for deleting a line. Practical examples demonstrate how to insert and delete lines based on line numbers or specific words, and how to make these changes permanent in a file.

What is the significance of using the 'I' option when modifying a file?

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Explain how to insert a line after a specific line number.

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How can you identify the last line in a file using the set command?

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What command would you use to delete the third line of a file?

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