If you are on a Unix system, to uncompress *.Z or *.tar.Z files, at the shell prompt, enter: uncompress *.Z Use the ls command to check the resulting files. If uncompress creates a.tar file, you must extract the files by entering: tar -xvf *.tar

On Linux and macOS, you can use the gzip utility to decompress a.gz file. The syntax is as follows: gzip -d file.gz The command will restore the compressed file to its original state and remove the.gz file. If you want to keep the compressed file, pass the -k option to the command: gzip -dk file.gz