I have tried both gzip and gunzip commands but I get either
gunzip *.gz
gzip: invalid option -- 'Y'
gunzip -S-1800-01-01-000000-g01.h5.gz
gzip: compressed data not read
from a terminal. Use -f to force decompression. For help, type: gzip -h
If I try the -f option it takes a very long time to work on one single file and the command is not executed successfully. Am I missing something?