We have two methods:
Method 1:
cat ok.txt |sort | uniq > ok2.txt
Method 2:
sort -u ok.txt >> ok2.txt
Linux: How to generate list of unique lines in a text file
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We have two methods:
Method 1:
cat ok.txt |sort | uniq > ok2.txt
Method 2:
sort -u ok.txt >> ok2.txt