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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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# Start the old vagrant
$ vagrant init centos-6.3
$ vagrant up

# You should see a message like:
#  [default] The guest additions on this VM do not match the install version of
#  VirtualBox! This may cause things such as forwarded ports, shared
#  folders, and more to not work properly. If any of those things fail on
#  this machine, please update the guest additions and repackage the
#  box.

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package counter

import "io"

type Counter struct {
	w io.Writer
	c int
}

func New(w io.Writer) (h *Counter) {

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// $string： 明文 或 密文  
 // $operation：DECODE表示解密,其它表示加密  
 // $key： 密匙  
 // $expiry：密文有效期  
 function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {  
    // 动态密匙长度，相同的明文会生成不同密文就是依靠动态密匙  
    $ckey_length = 4;  
      
    // 密匙  
    $key = md5($key ? $key : $GLOBALS['discuz_auth_key']);  

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<?php
require_once dirname(__FILE__) . '/../lib/simpletest/autorun.php';

function retry($f, $delay = 10, $retries = 3)
{
    try {
        return $f();
    } catch (Exception $e) {
        if ($retries > 0) {
            sleep($delay);

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ssss

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Developer Mode: http://www.chromium.org/chromium-os/developer-information-for-chrome-os-devices/chromebook-pixel#TOC-Entering-Developer-Mode

udo crossystem dev_boot_usb=1stalling Linux on the Chromebook Pixel: http://vger.kernel.org/~davem/chromebook_pixel_linux.txt

http://reviewingtech.com/install-fedora-on-chromebook-pixel/ https://colemickens.io/post/2015-04-02-chromebook-pixel-ls-2015-linux-guide/ https://gist.github.com/thirteen37/5559107

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Create a branch with the tag

	git branch {tagname}-branch {tagname}
	git checkout {tagname}-branch

Include the fix manually if it's just a change ....

	git add .
	git ci -m "Fix included" # or cherry-pick the commit, whatever is easier
	git cherry-pick {num_commit}

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Homebrew build logs for python3 on macOS 10.13.2
Build date: 2017-12-23 17:00:57

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Use tcpdump to monitor mysql

  # Capture the packets
  sudo tcpdump -i eth0 port 3306 -s 65535 -x -n -q -tttt > tcpdump.out

  # analyze all the requests from a given host
  pt-query-digest --type=tcpdump --filter '($event->{host} || $event->{ip} || "") =~ m/192.168.248.64/' tcpdump.out

  # 直接使用 tcpdump 打印相关SQL文本
  sudo tcpdump -i any -nn -s 0 -l -w - host 192.168.56.102 and tcp port 3306 | strings