SSL 安全证书可以自己生成,也可以通过第三方的 CA ( Certification Authority )认证中心付费申请颁发. SSL 安全证书包括: 1.CA 证书,也叫根证书或中间级证书.单向认证的 https , CA 证书是可选的.主要目的是使证书构成一个证书链,以达到浏览器信任证书的目的.如果使用了 CA 证书,服务器证书和客户证书都使用 CA 证书来签名.如果不安装 CA 证书,浏览器默认认为是不安全的. 2.服务器证书.必选.通过服务器私钥,生成证书请求文件 CSR ,再通过
转自:http://blog.csdn.net/mrjy1475726263/article/details/44116289 源自:http://andyniu.iteye.com/blog/1965571 core dump的概念: A core dump is the recorded state of the working memory of a computer program at a specific time, generally when the program has te
core dump的概念: A core dump is the recorded state of the working memory of a computer program at a specific time, generally when the program has terminated abnormally (crashed). In practice, other key pieces of program state are usually dumped at the s
在 Windows.Linux 操作系统,分别利用BAT批处理文件和Shell脚本,生成类似“20110228_082905.txt”以“年月日_时分秒”命名的文件. Windows BAT批处理文件: @echo off set time_hh=%time:~0,2% if /i %time_hh% LSS 10 (set time_hh=0%time:~1,1%) set filename=%date:~,4%%date:~5,2%%date:~8,2%_%time_hh%%time:~3,