zforce

Add .gz extension

$ zforce [path/to/file1 path/to/file2 ...]

zforce [FILE...]

zforce adds a .gz extension to files compressed with gzip that are missing the extension. It examines files and renames only those that are valid gzip files.
Files that already have the .gz extension or are not gzip-compressed are ignored.

Only processes gzip files without .gz extension. Does not compress files, only renames them.

gzip(1), gunzip(1), zcat(1)