https://exiftool.org/forum/index.php?topic=8976.0
exiftool -a -G1 -s -time:all 00021128_001932_1.JPG
[System] FileModifyDate : 2020:08:29 08:13:22+02:00
[System] FileAccessDate : 2020:08:29 08:13:25+02:00
[System] FileInodeChangeDate : 2020:08:29 08:13:24+02:00
[IFD0] ModifyDate : 0001:05:31 00:00:00
[ExifIFD] DateTimeOriginal : 0001:05:31 00:00:00
[ExifIFD] CreateDate : 0001:05:31 00:00:00
exiftool "-alldates=2003:7:3 12:0:0" 00021128_001932_1.JPG
1 image files updated
exiftool -UserComment='some comment' P1010011.JPG