motd.tcl

#!/usr/bin/env tclsh
# MOTD script original? / mod mewbies.com

# Save as /etc/motd.tcl and add "/etc/motd.tcl" to the end of your /etc/profile
# You'll also need to:
#   - sudo apt-get install tcl 
#   - delete the contents of /etc/motd
#   - sudo chmod 755 /etc/motd.tcl
#   - comment out "uname -snrvm > /var/run/motd.dynamic" in /etc/init.d/motd 
#   - change "PrintLastLog yes" to "PrintLastLog no" in /etc/ssh/sshd_config

gboudreau

Generating Authy passwords on other authenticators

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*update: TBC, but this new might affect how easy it is to use this technique past August 2024: Authy is shutting down its desktop app | The 2FA app Authy will only be available on Android and iOS starting in August

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This gist, based in part on a gist by Brian Hartvigsen, allows you to export from Authy your TOTP tokens you have stored there.
Those can be "standard" 6-digits / 30 secs tokens, or Authy's own version, the 7-digits / 10 secs tokens.