Deprecating scp [LWN.net]
https://lwn.net/Articles/835962/
sftp プロトコルを使う scp コマンド、いつ出てくるんだろう
OpenSSH SCP deprecation in RHEL 9: What you need to know https://www.redhat.com/en/blog/openssh-scp-deprecation-rhel-9-what-you-need-know
2023-04-13
> * The scp command line tool uses the SFTP protocol for file transfers by default.
> * Usage of the SCP protocol can be restored using the newly added -O option.