How to get the first 10 lines from a text file and remove them from there?

Question

Node.js

I have a .txt file with lines:

123123
123123
aaa12123
asdasasd123...

I need to take N number of lines from the beginning, write them to a variable and immediately delete them from the file. I will be very grateful for help.

Answer 1

const fs = require('fs')

try {
  const data = fs.readFileSync('/Users/joe/test.txt', 'utf8')
  console.log(data)
} catch (err) {
  console.error(err)
}

further data splitting
https://developer.mozilla.org/en/docs/Web/JavaScri...
write the first 10 to yourself
, write the rest to another variable
, then join on the second variable
and write to the file