How can I sort the lines in this text file?

 To sort the lines in a text file on a Linux system, you can use the `sort` command. The `sort` command will arrange the lines in lexicographical order (alphabetical order). Here's how to use it:


1. **Basic Sorting:**


   To sort the lines in a file named `input.txt` and display the sorted output in the terminal, use the following command:


   ```bash

   sort input.txt

   ```


   This will display the sorted lines in the terminal.


2. **Sort and Save in a New File:**


   If you want to save the sorted lines into a new file, you can use output redirection:


   ```bash

   sort input.txt > sorted_output.txt

   ```


   This command sorts the lines from `input.txt` and saves the sorted output to a new file named `sorted_output.txt`.


3. **Sort in Reverse Order:**


   To sort the lines in reverse (descending) order, use the `-r` flag:


   ```bash

   sort -r input.txt

   ```


4. **Sort Numerically:**


   By default, `sort` performs a lexicographical sort, which means it treats numbers as strings and not numeric values. To sort lines numerically, use the `-n` flag:


   ```bash

   sort -n input.txt

   ```


5. **Sort and Remove Duplicate Lines:**


   To sort the lines and remove duplicate lines, use the `-u` flag:


   ```bash

   sort -u input.txt

   ```


   This command sorts the lines and displays only unique lines.


6. **Ignore Leading Blanks:**


   If you want to sort lines while ignoring leading whitespace (blanks), use the `-b` flag:


   ```bash

   sort -b input.txt

   ```


7. **Case-Insensitive Sorting:**


   To perform a case-insensitive sort, use the `-f` flag:


   ```bash

   sort -f input.txt

   ```


These are some common options for the `sort` command. You can combine these options to achieve the desired sorting behavior for your specific needs.

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