How to Update “Bypass proxy settings for these Hosts & Domains” Programmatically in OS X

You can get all proxy bypass domains using:

$ networksetup -getproxybypassdomains "Wi-Fi"

The Wi-Fi should be your current interface, you can also update it using:

$ networksetup -setproxybypassdomains "Wi-Fi" \
*.local \
0.0.0.0/8 \
1.0.0.0/9 \
1.160.0.0/11 \
1.192.0.0/11 \

See man networksetup for more information