termtrick.com
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Send a message with timeout (default 300)
wall
Write a message on the terminals of users currently logged in.
More information: <https://manned.org/wall>.
Trick copyright:
tl;dr; <
https://github.com/tldr-pages/tldr
>
wall -t {{seconds}} {{file}}
click the source code to copy
install
wall
on any operating system with
command-not-found.com