Access github slow lazy version on Mac

reference article

Precautions

Run the script with administrator privileges

mac uses sudo + drag and drop the script to execute

basic version

#!/bin/bash

#获取github.com最新的ip地址
fast_ip=`curl https://github.com.ipaddress.com/|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
echo "github.com最新的ip地址: $fast_ip";

#添加或替换 $fast_ip 到 /etc/hosts 中
if grep "www.github.com" /etc/hosts;then
	echo "github dns exists, replace it with the latest one $fast_ip";
	sed -i -e "s|[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}  *www\.github\.com|$fast_ip www\.github\.com|"  /etc/hosts;
else
	echo "github dns does not exist, replace it with the latest one $fast_ip";
	echo -e "\n#Github\n$fast_ip www.github.com\n" >> /etc/hosts;
fi

#刷新DNS
dscacheutil -flushcache; 
killall -HUP mDNSResponder;
say DNS cache has been flushed;

 

updated version

Added several other URLs compared to the basic version

Note: This script will delete line 12 to the last line in /etc/hosts. If the github content of your /etc/hosts file does not start from line 12, please modify it yourself

#!/bin/bash

# 请使用管理员模式运行此文件

github_com=`curl https://github.com.ipaddress.com/|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
gist_github_com=`curl https://github.com.ipaddress.com/gist.github.com|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
help_github_com=`curl https://github.com.ipaddress.com/help.github.com|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
nodeload_github_com=`curl https://github.com.ipaddress.com/nodeload.github.com|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
raw_github_com=`curl https://github.com.ipaddress.com/raw.github.com|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
status_github_com=`curl https://github.com.ipaddress.com/status.github.com|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
training_github_com=`curl https://github.com.ipaddress.com/training.github.com|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
assets_cdn_github_com=`curl https://github.com.ipaddress.com/assets-cdn.github.com|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;
github_global_ssl_fastly_net=`curl https://fastly.net.ipaddress.com/github.global.ssl.fastly.net|grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}"|sed -n '2p'`;

ip_arr=($github_com $gist_github_com $help_github_com $nodeload_github_com $raw_github_com $status_github_com $training_github_com $assets_cdn_github_com $github_global_ssl_fastly_net)
addr_arr=("github.com" "gist.github.com" "help.github.com" "nodeload.github.com" "raw.github.com" "status.github.com" "training.github.com" "assets-cdn.github.com" "github.global.ssl.fastly.net")

# 如果已经有了 github.com，则先删除
if grep "github.com" /etc/hosts;then
	echo "删除12行到最后一行";
	sed -i '' '12,$d' /etc/hosts;
fi

# 拼接 str
str=""
for ((i=0; i<${#ip_arr[*]}; i++))
do
    str="$str\n${ip_arr[i]}  ${addr_arr[i]}"
done
echo -e ${str}

# 将 str 写入文件
echo -e "$str" >> /etc/hosts;

# 刷新DNS
dscacheutil -flushcache; 
killall -HUP mDNSResponder;
say DNS cache has been flushed;

epilogue

Personally, setting /etc/hosts still can't solve the problem of my slow access to github, but I still post the script I wrote, in case someone is useful