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1170.Advanced search and replace -- How to remove duplicate lines from a text file?

User: editor -- 2014-02-01          << 1169  1171 >>
Hits: 1398
Type: Advanced search and replace   
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Description:
How to remove duplicate lines from a text file?
Input Sample:
line1
line2
line3
line1
line1
line4
Output Sample:
line1
line2
line3
line4
Answer:
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
1. ctrl-o open text file
2. open "replace->replace by template->line replace->replace all duplicated line" menu 
3. click "ok", click "replace", done.

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