zcat –DVv [file …]
zcat takes one or more compressed data files as input. The data files should be compressed with the compress command. If no data files are specified on the command line, zcat reads standard input (stdin). You can also pass stdin to zcat by specifying – as one of the files on the command line.
zcat uncompresses the data of all the input files, and writes the result on standard output (stdout). zcat concatenates the data in the same way cat does.
The names of compressed input files are expected to end in .Z. If a specified input file name does not end in this suffix, zcat automatically adds the .Z. For example, if the command line specifies file abc, zcat looks for abc.Z.
uncompress -c
See Localization for more information.
UNIX systems
cat, compress, uncompress