I am answering slightly differently, because it seems to be an XY problem. Most likely you are trying to get a list of unique lines, and if it's a log, you are not very likely to want to edit it. Therefore, you are unlikely asking for an editor, this is just what you have used on Windows, so think that no other way is possible.
On GNU/Linux a better alternative would be to use uniq command in the terminal. Simply pipe any output into it, and it will remove duplicate lines. For example if you have a file ~/logs/log1 you can simply do:
cat ~/logs/log1 | uniq
and you will get all the unique lines. If the list is too large and you want to be able to scroll you can do:
cat ~/logs/log1 | uniq | less
and finally if you do want to edit the file afterwards, you can simply output to a different file and then edit it
cat ~/logs/log1 | uniq > ~/logs/log1-filtered