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- How to get only the unique results without having to sort data?
62 $ cat data txt aaaaaa aaaaaa cccccc aaaaaa aaaaaa bbbbbb $ cat data txt | uniq aaaaaa cccccc aaaaaa bbbbbb $ cat data txt | sort | uniq aaaaaa bbbbbb cccccc $ The result that I need is to display all the lines from the original file removing all the duplicates (not just the consecutive ones), while maintaining the original order of
- How to print only the duplicate values from a text file?
You can use uniq(1) for this if the file is sorted: uniq -d file txt If the file is not sorted, run it through sort(1) first: sort file txt | uniq -d This will print out the duplicates only Technically the input does not need to be in sorted order, but the duplicates in the file need to be consecutive The usual way to achieve that is to sort the file
- How to get unique lines based on value of a column
$ cut -d' ' -f1 <file | sort | uniq -d | sed 's ^ ^ ' | grep -v -f dev stdin file B 17 D 344 This first picks out the duplicated entries in the first column of the file file by cutting the column out, sorting it and feeding it to uniq -d (which will only report duplicates) It then prefixes each resulting line with ^ to create regular expressions that are anchored to the beginning of the line
- bash - How can I remove duplicates in my . bash_history, preserving . . .
After sort|uniq -ing, all lines are sorted back according to their original order (using the line number field) and the line number field is removed from the lines This solution has the flaw that it is undefined which representative of a class of equal lines will make it in the output and therefore its position in the final output is undefined
- shell script - Identify the number of unique values and then the number . . .
Just use sort and uniq: sort mylist txt | uniq | wc -l That will give you the number of unique values To get the number of occurrences of each unique value, use uniq 's -c option: sort mylist txt | uniq -c From the uniq man page: -c, --count prefix lines by the number of occurrences Also, for future reference, grep 's -c option is often useful: -c, --count Suppress normal output; instead
- Using awk to identify the number identical columns
I have a large number of individual files that contain six columns each (number of rows can vary) As a simple example: 1 0 0 0 0 0 0 1 1 1 0 0 I am trying to identify how many
- Sort and count number of occurrence of lines
uniq options: -c, --count prefix lines by the number of occurrences sort options: -n, --numeric-sort compare according to string numerical value -r, --reverse reverse the result of comparisons In the particular case were the lines you are sorting are numbers, you need use sort -gr instead of sort -nr, see comment
- awk - How to let `sort | uniq -c` separate the number of occurrences by . . .
How to let `sort | uniq -c` separate the number of occurrences by a tab character? Ask Question Asked 14 years, 2 months ago Modified 6 years, 5 months ago
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