znew

Recompress files from .Z to .gz format. More information: https://manned.org/znew.

• Recompress a file from .Z to .gz format:
  znew {{path/to/file1.Z}}
• Recompress multiple files and display the achieved size reduction % per file:
  znew -v {{path/to/file1.Z}} {{path/to/file2.Z}} {{path/to/file3.Z}}
• Recompress a file using the slowest compression method (for optimal compression):
  znew -9 {{path/to/file1.Z}}
• Recompress a file, [K]eeping the .Z file if it is smaller than the .gz file:
  znew -K {{path/to/file1.Z}}