github.com/StackPointCloud/packer@v0.10.2-0.20180716202532-b28098e0f79b/post-processor/compress/notes.txt (about)

     1  * 1.9.6            => GNU tar format
     2  * 1.10.3 w/ patch  => GNU tar format
     3  * 1.10.3 w/o patch => Posix tar format