The & will make sure that the file doesn't get overwritten when there is a problem. 2) Use -f uniq option to skip the prior columns, and use the -w uniq option to limit the width to the tmpfixedwidth. Note input files do not need to be sorted for grep solution. If you want to remove the first line inside the file, you should use: tail -n +2 "$FILE" > "$FILE.tmp" & mv "$FILE.tmp" "$FILE" 1) Temporarily make the column of interest a fixed width greater than or equal to the field's max width. unique lines in entire file sort wordlist.txt uniq -u to. Add unique words from a text file to a list in python. Getting unique values for a file in python.
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