Compress or decompress .xz and .lzma files. More information: <https://manned.org/xz>.

• Compress a file using xz:
  xz path/to/file
• Decompress an xz file:
  xz --decompress path/to/file.xz
• Compress a file using lzma:
  xz --format=lzma path/to/file
• Decompress an lzma file:
  xz --decompress --format=lzma path/to/file.lzma
• Decompress a file and write to `stdout` (implies `--keep`):
  xz --decompress --stdout path/to/file.xz
• Compress a file, but don't delete the original:
  xz --keep path/to/file
• Compress a file using the fastest compression:
  xz -0 path/to/file
• Compress a file using the best compression:
  xz -9 path/to/file

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