extract timestamp from a gzip file

• https://unix.stackexchange.com/questions/79543/extract-timestamp-from-a-gzip-file/79546
• http://www.forensicswiki.org/wiki/Gzip

Try this:

$ <foo.gz dd bs=4 skip=1 count=1 | od -t d4
0000000 1036139973
0000004

# with extended versions of dd resp. od:

$ <foo.gz dd bs=4 skip=1 count=1 status=none | od ---format=d4 --address-radix=n
1036139973

• https://en.wikipedia.org/wiki/Unix_epoch – this is what the given command line shows you (actually with offsets around)

How to display a human readable time stamp from the one extracted?

• http://Jochen.Hayek.name/wp/blog-en/2017/10/26/how-to-translate-human-readable-time-to-epoch/ – … and esp. the other way round