WebJul 30, 2024 · Just change your awk command to the column you want to remove duplicated lines based on that column (in your case third column): awk '!seen [$3]++' filename This … WebApr 24, 2014 · If you want to remove all duplicates (including duplicate empty lines) awk ' {if ($1 in a) next; a [$1]=$0; print}' test.txt If you want to retain duplicate empty lines awk '/^$/ {print; next} {if ($1 in a) next; a [$1]=$0; print}' test.txt Share Improve this answer Follow answered Apr 24, 2014 at 13:48 steeldriver 76.4k 11 104 145
Remove lines based on duplicates within one column without sort
WebThis is a classical problem that can be solved with the uniq command. uniq can detect duplicate consecutive lines and remove duplicates ( -u, --unique) or keep duplicates only ( -d, --repeated ). Since ordering of duplicate lines is not important for you, you should sort it first. Then use uniq to print unique lines only: WebIn order to keep only unique lines in Vim, you would: : {range}sort u. Yes, it's that simple. You could create a range in advance, such as 'a,. (from mark 'a' to the current line) or you could create one on-the-fly using visual selection by pressing ':' in visual mode, after selecting the text you wish to sort, to get a range of '<,'> on the ... can bees smell nectar
Remove unwanted empty lines Vim Tips Wiki Fandom
WebNov 2, 2024 · The only way to know if a line is repeated at any place of the file is to get a count of times a line is repeated. That is done with seen1. Then, if the line has a count of 1 (no repeats) or if it has already been seen (this second scan of the file) (done with seen2) print it. If the file is sorted by the first field use @devWeek solution. Share WebOct 2, 2024 · In normal mode, d is the key for cutting (deleting) text. Move the cursor to the desired position and press the d key, followed by the movement command. Here are some helpful deleting commands: dd - Delete (cut) the current line, including the newline character. 3dd - Delete (cut) three lines, starting from the line where the cursor is … WebApr 17, 2015 · If you have a file with ^M at the end of some lines and you want to get rid of them, use this in Vim: (Press Ctrl + V Ctrl + M to insert that ^M .) Try :%s/^M/\r/g instead to remove ^M and replace ^M with newline character \r. Without %, the command applies for current line only. fishing crescent lake washington