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How do I quickly scrape off first few lines from a large file, without opening the whole file in main memory?
I do not want to pipe the starting x lines into another file and then cut the first few lines, I want to update the original file.
896
To delete a line in Vi or Vim, switch to normal mode first. If you're into command mode or insert mode, you can switch back to normal mode by pressing Escape. Highlight the line that you want to delete, then hit dd or D on the keyboard. The editor will automatically remove the whole line from the file.
Not exactly vim, but to cut of the first 10 lines you could use
tail --lines=+10 somefile.txt > newfile.txt
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