yum update ca-certificates # centos
apt install ca-certificates # debian

curl https://get.acme.sh | sh -s email=[email protected]
wget -O -  https://get.acme.sh | sh -s email=[email protected]

# 国内使用
# https://github.com/acmesh-official/acme.sh/wiki/Install-in-China
git clone https://gitee.com/neilpang/acme.sh.git
cd acme.sh
./acme.sh --install -m email=[email protected]

source ~/.bashrc
source ~/.zshrc