$ wget https://download.01.org/gfx/RPM-GPG-KEY-ilg-4 -O - | sudo apt-key add - –2018-01-31 09:35:38– https://download.01.org/gfx/RPM-GPG-KEY-ilg-4 Resolving download.01.org (download.01.org)… 23.53.39.81, 2a02:26f0:2400:18f::ae6, 2a02:26f0:2400:184::ae6 Connecting to download.01.org (download.01.org)|23.53.39.81|:443… connected. HTTP request sent, awaiting response… 200 OK Length: 1751 (1,7K) Saving to: ‘STDOUT’
- 100%[=========================================================================================>] 1,71K –.-KB/s in 0s
2018-01-31 09:35:38 (322 MB/s) - written to stdout [1751/1751]
OK
$ sudo apt update … W: https://download.01.org/gfx/ubuntu/16.04/main/dists/xenial/InRelease: Signature by key 09D6EF97BFB38E916EF060E756A3DEF863961D39 uses weak digest algorithm (SHA1)