In newer versions, it's disabled by default and you have to do something like this to enable in ~/.ssh/config:
Host * EnableEscapeCommandline yes
`EnableEscapeCommandline` only controls the <Enter>~C commandline.
The reason that is disabled in current OpenSSH by default is OpenBSD `pledge` support:
https://security.stackexchange.com/questions/280793/what-att...
On my Linux,
cat<Enter>~.
`EnableEscapeCommandline` only controls the <Enter>~C commandline.
The reason that is disabled in current OpenSSH by default is OpenBSD `pledge` support:
https://security.stackexchange.com/questions/280793/what-att...
On my Linux,
closes the connection as expected, and no ~ is shown in the terminal.