1

There is an option with vlock to lock all pts/tty at a time which is,

$ vlock -a

But vlock can lock only virtual consoles.

There is also an option named TMOUT which will terminate the current sessions after given time.

So is there any tool to lock my all non-virtual terminal/pseudoterminal for terminal safety like TMOUT or vlock -a?

1

The error tell you: you cannot vlock not-virtual terminal. This is by design of vlock, and it will be very difficult to really lock non-virtual terminal.

For the second question: just lock your screen (with a screensaver + password).

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