Seff questions

Seff answers

• Nginx - Allowing origin IP
• Set screen-title from shellscript
• Run Cron Job every 45 minutes with Node-Cron
• Linux script to parse telnet message and exit
• Unable to load JNA native support library Elasticsearch 6.x
• What is difference between tail -f and tailf in unix?
• How to check if a certain port is open and unused?
• How to use crontab in Android?