Mac OS X: create arbitrarily large sparse/dummy file

On Mac OS X, you can use command dd or mkfile to create an arbitrarily large dummy file. The following examples create a 20GB file:
  • dd (works on Mac OS/Linux/Solaris/Unix...)
    dd if=/dev/urandom of=sparseFile bs=1m count=2000000
  • mkfile (works on Mac OS/Solaris/Irix)
    mkfile 20g sparseFile

See also

No comments:

Post a Comment