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l = ['B7','B6','E20','B5','B3','B2','C3','C0','C1','E22','G0','G2','G4','G5','G3','G1','E21','C2','B0','B1','B4']
n = []
path = '/sys/class/gpio'
for io in l:
    num = ord(io[0])-ord('A')
    num = num*32+int(io[1:])
    n.append(num)
for num in n:
    print('echo %d >%s/export'%(num,path))
    print('echo out >%s/gpio%d/direction'%(path,num))

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#!/bin/bash
#
# SATA SSD free-space TRIM utility, by Mark Lord <mlord@pobox.com>

VERSION=3.6 

# Copyright (C) 2009-2010 Mark Lord.  All rights reserved.
#
# Contains hfsplus and ntfs code contributed by Heiko Wegeler <heiko.wegeler@googlemail.com>.
# Package sleuthkit version >=3.1.1 is required for HFS+. Package ntfs-3g and ntfsprogs is required for NTFS.

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import sys
import subprocess
import notify2
import dbus
from gi.repository import GLib
from dbus.mainloop.glib import DBusGMainLoop
import yubico
def check(bus, msg):
    if msg.get_path() != "/ScreenSaver":
        return

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echo "" >>/media/removable/boot/config.txt
echo "enable_uart=1" >>/media/removable/boot/config.txt
touch /media/removable/boot/ssh
cat >/media/removable/boot/wpa_supplicant.conf <<EOF
country=CN
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
    ssid="dd-wrt"

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BPF_HELPERS_H
#define __BPF_HELPERS_H

/* helper macro to place programs, maps, license in
 * different sections in elf_bpf file. Section names
 * are interpreted by elf_bpf loader
 */
#define SEC(NAME) __attribute__((section(NAME), used))

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下载源码

wget 'http://nginx.org/packages/centos/7/SRPMS/nginx-1.14.2-1.el7_4.ngx.src.rpm'
rpm -i nginx-1.14.2-1.el7_4.ngx.src.rpm
tar -xf rpmbuild/SOURCES/nginx-1.14.2.tar.gz

下载module源码

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From 84a933323d59b27ae85cf16deddc254a0b17e450 Mon Sep 17 00:00:00 2001
From: Shraddha Chaudhari <Shraddha.Chaudhari@imgtec.com>
Date: Tue, 5 Jan 2016 11:16:43 +0530
Subject: mtd: spi-nor: add support for winbond OTP

Few winbond spi nor devices support 3 x 256 bytes
of security registers, add support for read, write, lock
of these registers as user OTP.

Also add support for reading winbond devices unique ID

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#include <linux/random.h>

int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode) {
	// ...
	// after mutex_init(&nor->lock);
	if(memcmp(info->id, "\xef\x40\x18", 3) == 0) {
		int ret;
		u8 buf[4+8]; // 4 dummy + 64-bit ID
		dev_warn(dev, "reading unique ID\n");
		ret = nor->read_reg(nor, 0x4B, buf, sizeof(buf)); // Read Unique ID number

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package main

// bash -c 'CGO_ENABLED=0 GOARCH=amd64 GOOS=linux go build -o clean clean.go'
// Usage:
// bandersnatch -c /tmp/b.conf verify --delete --dry-run &>verify-dry-run.log
// ./clean <verify-dry-run.log >clean.log

import ( "fmt";"log"; "os"; "time";"bufio";"strings" )

func main() {

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class MipselNoneElfBinutils < Formula
  desc "FSF Binutils for mipsel cross development"
  homepage "https://www.gnu.org/software/binutils/"
  url "https://ftp.gnu.org/gnu/binutils/binutils-2.32.tar.gz"
  sha256 "9b0d97b3d30df184d302bced12f976aa1e5fbf4b0be696cdebc6cca30411a46e"

  def install
    system "./configure", "--target=mipsel-none-elf",
                          "--disable-multilib",
                          "--disable-nls",