分类目录归档:网络技巧

Google Search 搜索符号指南

利用好 Google 搜索符号,可以帮助我们更精准的找到有用的信息。

常用符号

符号 描述 使用范例
“” 精准匹配 “北京大学”
除外含某些字段的结果 jobs -apple
+ 加入含某些字段的结果 the lord of the rings +netflix
* 在满足其他搜索条件前提下,通配相关字段 steve * apple
AND 同时满足多个条件 jobs AND gates
OR 同时满足多个条件 jobs OR gates
( ) 分组,以执行多个搜索条件 (清华大学 OR 北京大学) 校长

使用案例

缩小搜索范围

  1. 准备开展一个 distance learning 课题,需要搜索已有相关研究内容
用法:("Keyword" OR "synonym") ("keyword" OR "synonym")
示例:(distance OR online) (learning OR education)
  1. 进一步想只搜索关键字位于网页内容/标题的结果
用法:intext:
示例:intext:((distance OR online) (learning OR education))
用法:intitle:
示例:intitle:((distance OR online) (learning OR education))
  1. 再排除来自 *.gov 网页的结果
用法:-
示例:intitle:((distance OR online) (learning OR education)) -site:.gov
  1. 或者只显示来自 *.com 网页的结果
用法:site:
示例:intitle:((distance OR online) (learning OR education)) site:.com
  1. 过滤掉 url 中不含相关关键字的结果
用法:inurl:
示例:inurl:become (author OR writer OR contributor) intitle:((distance OR online) (learning OR education)) site:.com

检索不安全网页

搜索未使用 https 的网页

site:sina.com -inurl:https

搜索被引用网页

搜索引用某些字段的网页

(intext:(ny OR new york) times) -site:nytimes.com

限定在某国顶级域内搜索

(intext:(ny OR new york) times) site:.cn

参考资料

免费时间戳服务器

服务器列表

有的时候需要使用时间戳服务,但一时找不到免费的时间戳服务器,所以在这里总结一下。

Digicert:
http://timestamp.digicert.com
Credible: Yes . [Adobe Approved Trust List] and [Windows Cert Store].
Hash: up to SHA512

GlobalSign:
http://aatl-timestamp.globalsign.com/tsa/aohfewat2389535fnasgnlg5m23
Credible: Yes . [Adobe Approved Trust List] and [Windows Cert Store].
Hash: up to SHA512

Sectigo:
https://timestamp.sectigo.com
Credible: Yes . [Adobe Approved Trust List] and [Windows Cert Store].
Hash: up to SHA512
Note: wait 15 seconds between each request.

Entrust:
http://timestamp.entrust.net/TSS/RFC3161sha2TS
Credible: Yes . [Adobe Approved Trust List] and [Windows Cert Store].
Hash: up to SHA512

SwissSign:
http://tsa.swisssign.net
Credible: Yes . [Adobe Approved Trust List] and [Windows Cert Store].
Hash: up to SHA512
Note: only 10 requests per day. For bigger quantities contact the company.

IDnomic:
http://kstamp.keynectis.com/KSign/
Credible: Yes . [Adobe: European Union Trusted Lists] and [Windows Cert Store].
Hash: up to SHA512

QuoVadis + Digicert:
http://tsa.quovadisglobal.com/TSS/HttpTspServer
Credible: Yes . [Adobe Approved Trust List] and [Windows Cert Store].
Hash: up to SHA512

IRN:
http://ts.cartaodecidadao.pt/tsa/server
Credible: Yes . [Adobe: European Union Trusted Lists] and [Windows Cert Store].
Hash: only SHA256
Note: only allows 20 requests in 20 minutes, if more requests are done the IP address will be blocked and legal consequences may happen.

ACCV:
http://tss.accv.es:8318/tsa
Credible: Yes . [Adobe: European Union Trusted Lists] and [Windows Cert Store].
Hash: up to SHA512

BalTstamp:
http://tsa.baltstamp.lt
Credible: Yes . [Adobe: European Union Trusted Lists] and [Windows Cert Store].
Hash: up to SHA512
Note: Limitation applies to non-registered users: no more than 100 requests within one month; the beginning and the end of the month are defined in UTC time.

IZENPE:
http://tsa.izenpe.com
Credible: Yes . [Adobe: European Union Trusted Lists].
Hash: up to SHA512

CERTUM:
http://time.certum.pl
Credible: Yes . [Windows Cert Store]
Hash: up to SHA512

DFN:
http://zeitstempel.dfn.de
Credible: Yes . [Windows Cert Store]
Hash: up to SHA512
Note: commercial use forbidden.

CatCert:
http://psis.catcert.cat/psis/catcert/tsp
Credible: Yes . [Windows Cert Store]
Hash: up to SHA512

Symantec:
http://sha256timestamp.ws.symantec.com/sha256/timestamp
Credible: Yes . [Windows Cert Store]
Hash: up to SHA512

GlobaSign:
http://rfc3161timestamp.globalsign.com/advanced
http://timestamp.globalsign.com/tsa/r6advanced1
Credible: Yes . [Windows Cert Store]
Hash: up to SHA512

Apple:
http://timestamp.apple.com/ts01
Credible: Yes. [Apple CA]
Hash: up to SHA512

FreeTSA:
https://freetsa.org/tsr
Credible: No.
Hash: up to SHA512

SafeStamper:
https://www.safestamper.com/tsa
Credible: No.
Hash: up to SHA512
Note: up to 5 requests per day. For bigger quantities contact the company.

MeSign:
http://tsa.mesign.com
Credible: No.
Hash: up to SHA512

WoTrust:
https://tsa.wotrus.com
Credible: No.
Hash: only SHA256
Note: wait 15 seconds between each request.

Lex-Persona:
http://tsa.lex-persona.com/tsa
Credible: No.
Hash: up to SHA512

Reference

  1. 可信时间戳
  2. List of free rfc3161 servers

更新日志

2021-12-14:更新可用服务器。

WordPress常用命令

使用Wordpress总会或多或少的遇到一些小问题,每当重复遇到这些问题时总是要到处寻找答案,浪费时间又浪费精力。所以开了这个贴记录一些使用WP过程中经常会遇到的问题以及解决办法。

  • WordPress 手动更新

1. 下载解压最新的 WordPress 安装包
2. 关闭所有插件
3. 删除旧的 wp-includes 和 wp-admin 目录
4. 上传新的 wp-includes 和 wp-admin 目录
5. 上传覆盖新 wp-content 目录中的文件(切勿删除原有 wp-content 中的任何文件和目录
6. 上传新的根目录文件

  • WordPress 文章版本控制以及自动保存问题

WP自动保存文章的功能实话说还是非常有用的,但是有时保存间隔时间太短十分烦人。我们可以通过修改wp_config文件来实现对这自动保存间隔时间的调整。打开wp_config找到define('AUTOSAVE_INTERVAL', 180);,将里面的180修改为较大的数字即可。
关于文章版本控制的问题,可以在wp_config中找到define('WP_POST_REVISIONS', 3);进行调整。

收拾恶意广告病毒

最近上网,发现浏览器会自己弹出窗口,但内容却无法显示。查看源码发现包含如下网址:
www.buildathome.info
ad.yieldmanager.com
imp.zilionfast.in
bestadbid.com
ad.xtendmedia.com
rewardzone.wwwblogto.com
www.trendsonline.biz
7.rotator.wigetmedia.com

初步已经可以确定是广告网页,上网查询有关资料后发现这是 Buildathome 病毒,Buildathome 是一家病毒广告平台,你跳转的页面正是他们的客户。

查杀方式参见:Remove Buildathome.info virus (Removal Guide) ,只执行 1-3 步就够了。