Web30 okt. 2024 · To remove duplicate lines from files, you can use the uniq command. This command will take a file as input and output a new file with the duplicate lines … Web2 aug. 2011 · I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x [$0]++' are not working as its running out of buffer space. I dont know if this works : I want to read each line of the File in a For Loop, and want to delete all the matching lines leaving 1 line. This way I think it will not use any buffer space.
Unix / Linux: Remove duplicate lines from a text file using …
Web24 feb. 2024 · Prepare awk to use the FS field separator variable to read input text with fields separated by colons (:). Use the OFS output field separator to tell awk to use colons (:) to separate fields in the output. Set a counter to 0 (zero). Set the second field of each line of text to a blank value (it’s always an “x,” so we don’t need to see it). Web8 dec. 2024 · I want to extract installed packages in a specific date to remove them easily. I can list them in a line with the following command: ... awk remove duplicate words. Ask Question Asked 2 years, 4 months ago. Modified 2 years, ... remove 2nd line of output using awk. 4. Print unique words, ... tryptophan xps
Delete lines that come after a line with a specific pattern in Shell
Web28 mei 2024 · This awk command should work whatever the header is. It saves the first line as the header, and only prints the following lines if they are different from the saved header. It will work as long as the repeating headers are strictly the same. awk 'NR==1 && header=$0; $0!=header' originalfile > newfile. Share. Web21 jul. 2014 · Remove duplicate rows when >10 based on single column value. Hello, I'm trying to delete duplicates when there are more than 10 duplicates, based on the value of the first column. e.g. a 1 a 2 a 3 b 1 c 1 gives b 1 c 1 but requires 11 duplicates before it deletes. Thanks for the help Video tutorial on how to use code tags in The UNIX... WebDealing with duplicates. Often, you need to eliminate duplicates from an input file. This could be based on entire line content or based on certain fields. These are typically solved with sort and uniq commands. Advantage with awk include regexp based field and record separators, input doesn't have to be sorted, and in general more flexibility ... phillip omollo