Delete Duplicate Lines In A File Linux

Delete Duplicate Lines In A File Linux - ;Use the command uniq, you can remove duplicate entries. Like : cat file | sort -r | uniq But in this specific case is not producing exactly the expected result as the file must be sorted for uniq to work - it will only detect duplicate lines if they are adjacent. Remove duplicate lines from a file preserve order keep last tac stuff txt gt stuff2 txt cat n stuff2 txt sort uk2 sort nk1 cut f2 gt stuff3 txt tac stuff3 txt gt stuff4 txt cat stuff4 txt three one two four five Explanation Same as before but tac reverse the file achieving the desired result Share

Delete Duplicate Lines In A File Linux

Delete Duplicate Lines In A File Linux

;Remove duplicate lines with uniq. If you don't need to preserve the order of the lines in the file, using the sort and uniq commands will do what you need in a very straightforward way.... Closed 3 years ago. There is any Linux command that deletes duplicates of lines in a file but not the first appearance of the line that is duplicate. For example, we have a file that has the following lines: Test Line Another line Test 4th line Test Test Line. And I want after I run the command, the lines that should remain in the file are:

Linux Remove Duplicate Lines From A File But Leave 1 Occurrence

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Delete Duplicate Lines In A File Linux;def remove_duplicate_lines(input_path, output_path): if os.path.isfile(output_path): raise OSError('File at (output file location) exists.'.format(output_path)) with open(input_path, 'r') as input_file, open(output_path, 'w') as output_file: seen_lines = set() def add_line(line): seen_lines.add(line) return line. Explanation read a new line from the input stream or file and print it once use the loop command to set a label named loop use N to read the next line into the pattern space use s n 1 1 to delete the current line if the next line is the same with the current line We use the s command

;4 Answers Sorted by: 8 you didn't give an expected output, does this work for you? awk '!a [$1]++' file with your data, the output is: 123456.451 entered-auto_attendant 139651.526 entered-auto_attendant 139382.537 entered-auto_attendant and this line prints only unique column1 line: Use The OVERKILL Command To Remove Duplicate Lines MESA INC CAD Permanently Remove White Lines

Linux Remove Duplicate Lines With 1 Command Stack Overflow

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;Use sort -u to remove duplicates during the sort, rather than after. (And saves memory bandwidth) piping it to another program). (And saves memory bandwidth) piping it to another program). This is only better than the awk version if. Java Program To Delete Duplicate Lines In Text File Remove Duplicate

;Use sort -u to remove duplicates during the sort, rather than after. (And saves memory bandwidth) piping it to another program). (And saves memory bandwidth) piping it to another program). This is only better than the awk version if. Solved Remove Non duplicate Lines In Linux 9to5Answer 8 Ways To Count Lines In A File In Linux Command Line OrcaCore