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curly braces

I've tons of images, css and javascript hosted at backend server IP 192.168.1.5 and 192.168.1.6. How do I make sure nginx reverse proxy load balancer always send all http_user_agent requests coming from "Mozilla" to server 192.168.1.5 and MSIE to server 192.168.1.6 only?
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How To Use awk In Bash Scripting

How do I use awk pattern scanning and processing language under bash scripts? Can you provide a few examples?
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