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When sshing into my machine, I see the following:

Welcome to Ubuntu 18.04.1 LTS (GNU/Linux 4.15.6-sound-29 x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

 * Security certifications for Ubuntu!
   We now have FIPS, STIG, CC and a CIS Benchmark.

   - http://bit.ly/Security_Certification

 * Want to make a highly secure kiosk, smart display or touchscreen?
   Here's a step-by-step tutorial for a rainy weekend, or a startup.

   - https://bit.ly/secure-kiosk


 * Canonical Livepatch is available for installation.
   - Reduce system reboots and improve kernel security. Activate at:
     https://ubuntu.com/livepatch

0 packages can be updated.
0 updates are security updates.

Last login: Sat Oct 13 18:31:05 2018 from ::1

How to disable these advertisements, without disabling the update and login parts (the Want to make a highly secure kiosk, smart display or touchscreen? ... part)?

Mark Amery
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Ferrybig
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    Identify the content of the files in your directory /etc/update-motd.d and modify or remove the content that creates the advertisements that you want to get rid of. – sudodus Oct 13 '18 at 17:06
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    Just go to /etc/update-motd.d and execute (or examine) the scripts there one by one. For the ones you don't like do chmod -x $script to disable their execution. – PerlDuck Oct 13 '18 at 17:07

2 Answers2

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When logging into a computer with SSH, a lot of text is displayed before reaching the command prompt. This comes from the motd (message of the day) process. The text can be somewhat overwhelming in volume.

To reduce or mostly eliminate this text, edit /etc/default/motd-news and change ENABLED=1 to ENABLED=0.

muru
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heynnema
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On Ubuntu 18.04+, this can be done by removing the execute bits from unwanted scripts in /etc/update-motd.d.

bfontaine
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JanCeuleers
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