Z是一个基于UNIX的数据压缩程序，基于无损压缩算法。Z用于在磁带中创建备份并压缩文件。它支持几乎所有的压缩软件。最近，在UNIX中Z被GZ取代。
Z is a UNIX based data compressor which is based on lossless compression algorithm. Z is used to in magnetic tape to create backup in compress files. It supports almost all the compression software. Very recently Z is replaced by GZ in UNIX.
