Modify a Text File Using Sed

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Modify a Text File Using Sed

You are working at a firm that is collecting information about ancient Greece that will be published in a new book. A member of your team has contributed a text file that contains the fable of the "The Ants and the Grasshopper." However, the text is incorrect as all of the instances of the word 'ants' has been replaced with the word 'cows'. You will need to modify this file using a sed command so that the file will have the correct text. All instances of the word 'cows', regardless of case, needs to be replaced with the word 'ants'. Once you have accomplished this task, leave the file on the system so that your editor can review your work. NOTE: You only need to ignore case sensitivity on the input, not match case on the output.

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Lab Info

Level

Beginner

Last updated

Sep 15, 2025

Duration

1h 0m

Challenge

Use `sed` to Change a Word in the File
The word 'cows' needs to be replaced with the word 'Ants' in the fable.txt file.

This can be done with the following command:
```
sed -i 's/cows/Ants/Ig' fable.txt 
```
Challenge

There Should Be No Other File in the Home Directory

There should be no other file in the home directory. The sed command must be run "in place," and no other temporary file should be used.

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