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新建分区：

gdisk /dev/sdc
Command (? for help): n
Partition number (1-128, default 1): 
First sector (34-60555230, default = 2048) or {+-}size{KMGTP}: 
Last sector (2048-60555230, default = 60555230) or {+-}size{KMGTP}: +200M
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): ef00
Changed type of partition to 'EFI System'

Command (? for help): n
Partition number (2-128, default 2): 
First sector (34-60555230, default = 411648) or {+-}size{KMGTP}: 
Last sector (411648-60555230, default = 60555230) or {+-}size{KMGTP}: 
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): af00
Changed type of partition to 'Apple HFS/HFS+'

Command (? for help): w

格式化分区：

apt-get install hfsprogs
apt-get install dosfstools
mkfs.vfat -n EFI /dev/sdc1 
mkfs.hfsplus -v 'Install macOS Sierra 16A323' /dev/sdc2 

dmg转img：

#yum -y install zlib-devel bzip2-devel openssl-devel
#git clone https://github.com/Lekensteyn/dmg2img.git
#cd dmg2img && make
apt-get install dmg2img
dmg2img -v -i macOS\ Sierra\ 10.12\ \(16A323\).dmg -o mac.img

复制镜像到分区：

mount /dev/sdc1 efi/
mount /dev/sdc2 osx/
mount  -o loop Clover-v2.4k-4200-X64.iso /mnt/efi/
cp -rf /mnt/efi/* efi/
mount -t hfsplus -o loop mac.img /mnt/osx/
cp -rf /mnt/osx/* osx/

不能正常引导，后续再研究。

systemctl stop aliyun.service 
/etc/init.d/aegis stop
/etc/init.d/agentwatch stop
chkconfig aegis off
systemctl disable aliyun.service
chkconfig agentwatch off

安装环境：

yum install openssl-devel gcc gcc-c++ libudev-devel git

git clone https://github.com/paritytech/parity
cargo build --release
cp target/release/parity /usr/bin/
parity --max-peers 200 --jsonrpc-apis web3,eth,net,parity,parity_accounts,traces,rpc,parity_set,personal

自动安装脚本：

curl https://sh.rustup.rs -sSf | sh 

手工选择安装：

wget  https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init
chmod +x rustup-init 
./rustup-init 

限制单位时间内执行次数，并保持先后顺序。

package main

import "fmt"
import "time"

var c chan chan int

func worker(i int) {
        t := make(chan int)
        c <- t
        fmt.Println(i, "启动任务")
loop:
        for {
                select {
                case <-t:
                        fmt.Println(i)
                        break loop
                default:
                        fmt.Println(i, "等待可用")
                        time.Sleep(100 * time.Millisecond)
                }
        }

        fmt.Println(i, "开始任务")
}
func master() {
        for {
                for i := 0; i < 10; i++ {
                        t := <-c
                        t <- 1
                        time.Sleep(500 * time.Millisecond)
                }
        }
}

func main() {
        c = make(chan chan int, 20)
        for i := 0; i < 10; i++ {
                go worker(i)
                time.Sleep(500 * time.Millisecond)
        }
        go master()
        for {
                time.Sleep(1000 * time.Millisecond)

        }
}