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关于减轻功夫墙（GFW）造成的不便的一些探讨

使用gooreplacer重定向对Google的访问

众所周知，天朝无法访问任何Google的服务。但不幸很多外国网站，如码农必备的Stackoverflow等都会调用Google的API，这就导致了这些网站访问速度巨慢，功能不全等问题。在网上发现了有人开发的关于可以重定向Google API到国内镜像的插件，可以用于Firefox和Google Chrome上。特记录于此：
插件地址：https://github.com/jiacai2050/gooreplacer
如果只需要重定向Google的访问，可以复制如下Rules，保存为.gson格式后导入。

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{
    "createBy": "http://liujiacai.net/gooreplacer/",
    "createAt": "Tue Jan 10 2017 17:45:39 GMT+0000",
    "rules": {
        "ajax.googleapis.com": {
            "dstURL": "ajax.proxy.ustclug.org",
            "kind": "wildcard",
            "enable": true
        },
        "storage.googleapis.com": {
            "dstURL": "storage-googleapis.proxy.ustclug.org",
            "kind": "wildcard",
            "enable": true
        },
        "gerrit.googlesource.com": {
            "dstURL": "gerrit-googlesource.proxy.ustclug.org",
            "kind": "wildcard",
            "enable": true
        },
        "themes.googleusercontent.com": {
            "dstURL": "google-themes.proxy.ustclug.org",
            "kind": "wildcard",
            "enable": true
        },
        "platform.twitter.com/widgets.js": {
            "dstURL": "cdn.rawgit.com/jiacai2050/gooreplacer/gh-pages/proxy/widgets.js",
            "kind": "wildcard",
            "enable": true
        },
        "apis.google.com/js/api.js": {
            "dstURL": "cdn.rawgit.com/jiacai2050/gooreplacer/gh-pages/proxy/api.js",
            "kind": "wildcard",
            "enable": true
        },
        "apis.google.com/js/plusone.js": {
            "dstURL": "cdn.rawgit.com/jiacai2050/gooreplacer/gh-pages/proxy/plusone.js",
            "kind": "wildcard",
            "enable": true
        }
    }
}

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AIOCR
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Tesseract

Install

1. Required package

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apt install autoconf-archive automake g++ libtool make pkg-config # for main recognization
apt install asciidoc # for document
apt-get install libicu-dev libpango1.0-dev libcairo2-dev # for training tool
1.1 Build libleptonica-dev from source
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sudo -i # build as root
wget http://www.leptonica.org/source/leptonica-1.76.0.tar.gz # check http://www.leptonica.org/download.html for latest version
tar -xzf leptonica-1.76.0.tar.gz
cd leptonica-1.76.0/
./configure
make
make install

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ProgrammingGit
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Git tricks

Caching GitHub password in Git

In Terminal, enter the following:

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git config --global credential.helper cache
# Set git to use the credential memory cache

To change the default password cache timeout, enter the following:

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git config --global credential.helper 'cache --timeout=3600'
# Set the cache to timeout after 1 hour (setting is in seconds)

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