Hi guys, I'm really happy to find this forum I have a log file, and I have to find all lines that have "error" word, and then save this output in file, the output file has to have just only one line to any Duplicated lines and counter that show how many time this lines duplicated?
I already did the grep, and sort the file? Join Date: Jan Code :. Last edited by amitranjansahu; at AM.. Reason: added -c. Hello All! Honey, I broke awk! After multiple optimzations It takes about 62 min to bring in and parse all the files and used to take 10 min to remove duplicates until I was requested to add another column.
I am using the highly optimized awk code: awk How to find duplicate line in Linux? Hi, Gurus, I need find the duplicate record in unix file. Thanks in advance 4 Replies. Find duplicate based on 'n' fields and mark the duplicate as 'D'. Hi, In a file, I have to mark duplicate records as 'D' and the latest record alone as 'C'.
CSV file:Find duplicates, save original and duplicate records in a new file. Hi Unix gurus, Maybe it is too much to ask for but please take a moment and help me out. Ask Question. Asked 3 years, 11 months ago. Active 8 months ago. Viewed 25k times. Improve this question. Lars Schneider Lars Schneider 1 1 gold badge 2 2 silver badges 9 9 bronze badges. Add a comment. Active Oldest Votes.
To find what files these lines came from, you may then do grep -Fx -f dupes. Finding the dupes This means that in the general case this will also work with many more than just files , one has to "chunk" the sorting: rm -f tmpfile find. To be totally correct, one may want to use either find. Improve this answer. At the end of your 1st block of shell script, what is the use of fi' sh? The ' ends that shell script the whole script is a singly quoted string.
In this instance, that sh string may actually be any word. To clarify, the script solutions for more than 30K files works by concatenating and sorting every single file in the directory tree into one large file, which can then be checked for duplicates?
Prometheus Yes, more or less. Note that the question here states that each file already is sorted, so we don't need to sort the individual files, only merge them into the larger corpus. Which means you probably might find some use for sort -m : -m, --merge merge already sorted files; do not sort The other obvious alternative to doing this would be a simple awk to collect the lines in an array, and count them.
ImHere ImHere Assuming files with lines of 80 characters each and no duplicates , this will require awk to store 2. After the process I run grep to find a files that contain a duplicated entry. Do you see a way to print the at least one filename that contains a duplicated entry?
Show 1 more comment. AWK evaluates everything but 0 and "" empty string to true. If a duplicate line is placed in seen then! Perl one-liner similar to jonas's AWK solution :.
The one-liner that Andre Miller posted works except for recent versions of sed when the input file ends with a blank line and no characterss. On my Mac my CPU just spins.
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