I got a latest dataset from the collaborator yesterday, some files were already included in the previous version. However I failed in “md5sum -c md5sum.text”, that really tossed me greatly. When I did the further check and I found there was not any differences between the decompressed files, so only the compression step changed the MD5!!!
An email from Ray reminded me. I found the following lines on wiki page of gzip and I could have a sweet dream tonight~
“gzip” is often also used to refer to the gzip file format, which is: