Understanding Linux cp Command and Implementing in Python
muhammadraza.me
How the Linux cp command works under the hood, and how to replicate its file-copying logic in a short Python script.
  • lobsters__david_36a4@crustaceanson.theshelf.topM
    1·
    16 days ago

    I believe cp on Linux uses copy_file_range, not read and write. In addition to bypassing copies to and from userspace, this means that copy-on-write filesystems can avoid copying the data and can instead just add a new reference.

    score 3 · canonical