Removing duplicate lines in a text file using notepad++

First ensure the TextFx plugin has been installed in your version of notepad++. Some example text: I then copy and paste that block of text to ensure there are duplicate lines: Removing the duplicates involves THREE steps: 1. If you have not already done so, ensure the appropriate TextFX plugin is checked. Select TextFX > TextFX Tools > Sort outputs only UNIQUE at column lines: 2. Select ALL of your text (select Control + A) 3. Select TextFX > TextFX Tools > Sort lines case sensitive (at column): See that the duplicate lines have been identified and removed:

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