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How to check if a process id (PID) exists
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I can confirm that on macOS Sierra, this works. Also, the -p is unnecessary, at least in that case. ps $PID has the exact same result.
– user137369
Apr 16 '17 at 10:56
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Open new Terminal Tab from command line (Mac OS X)
Is it possible to open a new tab in Mac OS X's terminal from the command line in a currently opened tab?
13 Answers
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How do I programmatically determine operating system in Java?
...OperatingSystemType();
switch (ostype) {
case Windows: break;
case MacOS: break;
case Linux: break;
case Other: break;
}
The helper class is:
/**
* helper class to check the operating system this Java VM runs in
*
* please keep the notes below as a pseudo-license
*
* http://s...
Can't find the 'libpq-fe.h header when trying to install pg gem
...ibpq-dev
On Red Hat Linux (RHEL) systems: yum install postgresql-devel
For Mac Homebrew: brew install postgresql
For Mac MacPorts PostgreSQL: gem install pg -- --with-pg-config=/opt/local/lib/postgresql[version number]/bin/pg_config
For OpenSuse: zypper in postgresql-devel
For ArchLinux: pacman -S p...
CSS3 gradient background set on body doesn't stretch but instead repeats?
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This worked for me in every browser I tested (Chrome [Mac], Safari [Mac], Firefox [Mac/Win7], IE9 [Win7] and Opera [Mac]) without the scrollbar side effect of the "height: 100%" solution. Thanks!
– pipwerks
May 9 '11 at 17:11
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使用NPAPI编写浏览器插件的源码实例(windows 7/linux) - C/C++ - 清泛网 - ...
...菜单项后link的url就会被保存到/tmp/link.log
本例源码地址:NpapiPlugin.zip
注意此例在debian sid/ubuntu10.10/windows 7 编译/测试。
NPAPI 浏览器插件
VS2012警告未能加载包“Visual C++ package” - C/C++ - 清泛网 - 专注C/C++及内核技术
...法：
到微软官网下载VS2012更新 KB2781514，大概1.12MB
链接地址：http://www.microsoft.com/zh-cn/download/details.aspx?id=36020
微软官网说明：Visual Studio 的缺陷可能导致它在 .NET 4.5 framework 更新过程中不稳定。
安装过程如图：
安装完后可...
C++/COM VARIANT实现二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术
...数逐个元素进行负责，也可通过指针来获得SAFEARRAY的数据地址，然后对指针指向的值进行赋值操作。其中，如果SAFEARRAY中的数组时多维数组，即可以把多维数组转换为一维数组，也可以通过获得指向数组的指针方式来操作数组中...
Linux编程中各种头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...构
netinet/in.h：定义数据结构sockaddr_in
arpa/inet.h：提供IP地址转换函数如inet_pton，inet_ntop
netdb.h：提供设置及获取域名的函数
sys/ioctl.h：提供对I/O控制的函数
sys/poll.h：提供socket等待测试机制的函数
fcntl.h：提供对文件控制的...
jupyter notebook选择conda环境 - C/C++ - 清泛网 - 专注C/C++及内核技术
...)"
然后打开notebook
jupyter notebook
浏览器打开对应地址，新建python，就会有对应的环境提示了.jupyter