Customize MOTD and login banners on Slackware

1. When to use it

Handy when you want to distinguish environments, expose maintenance windows, or display a minimal legal banner.

2. Base setup

printf 'Slackware admin host\nMaintenance window only\n' > /etc/motd
printf 'Authorized access only\n' > /etc/issue
printf 'Authorized access only\n' > /etc/issue.net

Adjust host names, IPs, interfaces, paths, and versions to the real system before making the change persistent.

3. Quick verification

sed -n '1,5p' /etc/motd
sed -n '1,5p' /etc/issue
sed -n '1,5p' /etc/issue.net

Confirm that the output matches the expected state before considering the intervention complete.

4. Operational notes

Avoid exposing versions, internal IPs, or other attacker-friendly details in the login banner.

Quick checklist

[ ] Steps completed\n[ ] Config updated\n[ ] Tests executed\n[ ] Rollback ready\n[ ] Logs checked

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