protecting against unsafe use of screen/tmux

15 Dec 2017 09:35 | linux | macOS | security | bash

It occurred to me recently that a lot of people probably use screen or tmux in ways that leave an easy path to privilege escalation open. For example if you start a screen session as your local user and then escalate to root inside the screen session. As soon as you do that, anyone with access to the non-root account can simply resume the screen session and immediately be root.

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How to get vi keybindings in bash and the MySQL client

11 Dec 2016 19:22 | vim | bash | mysql | linux

The vim keybindings are wonderful once you get used to them.

What some people don't know is that the same keybindings are available in other programs, for example bash has a "vi mode" which can be enabled with:

set -o vi

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