Remove duplicate lines from text files.

ETC Microsoft Windows
1

So, I have text files,

one "fail.txt"

And one
"color.txt"

I now want to use a command line (DOS) to remove ANY line that is PRESENT IN BOTH from each text file.

Afterwards there shall be no duplicate lines.

2

Well in unix-land:-

grep -vf fail.txt colours.txt   > output.txt
grep -vf colours.txt fail.txt  >> output.txt

I think that you can get a grep for DOS by searching on-line. Maybe Windows Grep: Grep for Windows will suit, but use your favourite search engine with the keywords DOS & GREP.

Robin