sh 修复hosts文件损坏

Posted 2021-05-07

#!/bin/sh

# Solution found here (run with sudo): 
#   http://superuser.com/questions/866086/localhost-aliases-in-mac-os-x-mysteriously-stopped-working

tr '\015' '\012' < /etc/hosts > /tmp/hosts.$$
mv /etc/hosts /etc/hosts.bad
mv /tmp/hosts.$$ /etc/hosts
chown root:wheel /etc/hosts
chmod 644 /etc/hosts