3 ms·

copy_file_range is much preferable to any of these because filesystems can "hook into" it and just share the underlying data, not copying at all.

• Denvercoder9 4y ago
  In general, yes, but as the article notes, itt's not applicable to cat, as cat always outputs to stdout and not to a file.
  • formerly_proven 4y ago
    You can handle the cat foo bar baz > file case this way though, because stdout is a file then.
    • ariadneconill 4y ago
      that is why the article mentions it as an honorable mention :P