It is easy to manipulate most devices on a Unix system because the kernel presents many of the device I/O interfaces to user processes as files. These device files are sometimes called device nodes. Not only can a programmer use regular file operations to work with a device, but some devic...
To do their work, network clients connect to corresponding network servers. Unix network servers come in many forms. A server program can listen to a port on its own or through a secondary server. In addition, servers have no common configuration database and a wide variety of features. Most...
On Linux, rsync is the standard synchronizer, offering good performance and many useful ways to perform transfers. We’ll cover some of the essential rsync operation modes and look at some of its peculiarities. 如果你需要经常进行这种操作(尤其是如果你计划自动化这个过程),请使用专用的同步系统。 在...
This section identifies such syscalls in the interest of completeness. Many calls (Table 3) can be rejected, returning ENOSYS or EINVAL, and the libraries that call them ei- ther handle the failure gracefully, fall back to an alternate POSIX mechanism, or ignore the result and trundle along ...
Add a new part to the project library, indicate how many sections it needs, and select heterogeneous to enable independent design of the multiple parts within the package. 2. Design Separate the pinout to suit the schematic page(s) best. Follow all pin naming/numbering provided by the manufac...
The following list includes many options that you can set in your global section and in the sections that control individual shares (as described later in the chapter): 您可以通过在smb.conf文件中添加选项来限制可以访问Samba服务器的机器和用户。 以下列表包括您可以在global部分和控制单个共享的部分(如...
Users can first check for PSpice models in the Component Explorer tab. Simulation and modeling greatly accelerate electronics development, as design teams can closely approximate in-circuit performance before any manufacturing steps occur. SPICE and its many proprietary descendants, like PSpice, are ...
Even a modest rise in sea levels could cause flooding problems for low-lying coastal areas. However, if the West Antarctic Ice Sheet were to melt and collapse into the sea, it would push sea levels up 10 meters (more than 32 feet), and many coastal areas would completely disappear ...
However, this culture of "disposable" goods created a number of environmental problems, which we'll discuss in detail in the next section. In the 1930s and 40s, conservation and recycling became important in American society and in many other parts of the world. Economic depressions made ...
This remark may seem a bit stupid, but if I make it it's because I've seen many cases where the code of Dispose methods was not complete. You know how it happens. You create your classes; you have them implement IDisposable; you unsubscribe from events and release resources in Dispose...