This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
 Documentation / Mathematica / Built-in Functions / System Interface / File System  /

  • FileByteCount[" file "] gives the number of bytes in a file.
  • If a particular file is moved from one computer system to another, the number of bytes in the file as reported by FileByteCount may change.
  • See the Mathematica book: Section 2.11.6.
  • See also: StringLength, FileType.
  • Related package: Utilities`BinaryFiles`.