Setting proxy for entire system (Centos7/Redhat7)

whole_system_proxy.sh

# set proxy config via /etc/profile.d - should apply for all users
# You can edit /etc/profile or add a script in /etc/profile.d directory which will be executed /etc/profile script
# After that, you can test executing "source /etc/profile"

PROXY_URL="http://10.102.45.9:8080/"

export http_proxy="$PROXY_URL"
export https_proxy="$PROXY_URL"
export ftp_proxy="$PROXY_URL"
export no_proxy="127.0.0.1,localhost"

# For curl
export HTTP_PROXY="$PROXY_URL"
export HTTPS_PROXY="$PROXY_URL"
export FTP_PROXY="$PROXY_URL"
export NO_PROXY="127.0.0.1,localhost"