gunzip command means gunzip can decompress files created by gzip or zip.

Syntax
gunzip [ -acfhlLnNrtvV ] [-S suffix] [ name … ]
In man page the describe it
- gunzip – compress or expand files.
- man gunzip – More details information about gunzip command.
gunzip command in Linux with Examples
$ gunzip devopsroles.txt.gz
Keep both the compressed and Decompressed file.
$ gunzip -k devopsroles.txt.gz
Display compressed within it without decompressing first.
$ gunzip -c devopsroles.txt.gz
Test Whether a Compressed File Is Valid before Decompressed it.
$ gunzip -t devopsroles.txt.gz
Show verbose information when you decompress the file.
$ gunzip -v devopsroles.txt.gz
Conclusion
gunzip command is the simple the command in Linux. It is the most popular in use terminal Linux compress or expand files.