类unix

• Mandatory locks are widely available , but not universally . linux and system v - based systems support them , but some other unix - like systems don t
  强制锁是可用范围很广，但它不是通用的； linux和基于system v的系统支持这种锁，但其他的类unix系统不支持它。
• Pyx s chief advantage is in leveraging the rich supply of line - oriented tools , especially under the unix - like operating systems that have emerged over the last 20 years
  Pyx主要的好处在于能够利用大量的面向行的工具，特别是在过去20年中，在类unix操作系统下发展起来的那些工具。
• On unix - like systems , shared directories need to have the sticky bit set . in sticky directories , files can be unlinked or renamed only by root or the file owner
  在类unix系统上，需要设置共享目录的“ sticky ”位；在sticky目录中，文件只能由root或者文件的所有者解除链接或者重新命名。
• The x window system provides resources for applications to display themselves in a graphical manner , and is the most commonly used windowing system on unix and unix - like boxes
  X window系统（ x11 ）为应用程序以图形方式进行显示提供了资源，并且它是unix和类unix的机器上最常用的窗口系统。
• But if multiple users can add files to a directory in a unix - like system , and you plan to add files to that directory from a privileged program , make sure that the
  但是，在类unix系统中，如果多个用户都可以向同一目录添加文件，而且您计划通过一个有特权的程序向该目录添加文件，那么要确保为该目录设置“ sticky ”位。
• In fact , a vulnerability to race conditions is one of the more common vulnerabilities in software , and on unix - like systems , the directories tmp and var tmp are often misused in a way that opens up race conditions
  实际上，竞争条件缺陷是软件的更常见缺陷之一，此外，在类unix系统上， / tmp和/ var / tmp目录经常会被错误地使用，从而导致竞争条件。
• On most unix - like systems , permissions are only checked on open , so an attacker could open the file while the permission bits said it was ok , and keep the file open with those permissions indefinitely
  在大部分类unix系统上，只在打开文件时才检查权限，所以，攻击者可以在权限位（ permission bit ）允许时打开文件，并使该文件一直处于打开状态，不管权限如何改变。
• Since i m concentrating on unix - like systems , i won t go into the details of how to deal with this problem , but it s worth noting , because this is an example where simply checking for legal characters isn t enough
  由于我所关心的是类unix系统，我就不再深入地探讨如何解决这个问题了，而且这也没有什么意义，因为这只是一个例子，用来说明一种用于检查的合法字符不足的情况。
• The linux operating system is a free unix - like operating system that runs on the entire range of ibm hardware : xseries intel - based servers , pseries unix servers , iseries mid - range integrated servers , and zseries high - end mainframes
  Linux操作系统是一种免费的类unix操作系统，它可以在所有的ibm硬件上运行：基于intel的xseries服务器， pseries unix服务器， iseries中级集成服务器，以及zseries高端大型机。
• The original intention of the pagoda project is to implement a simple and concise unix - like operating system which can be easily to understand , read and modify . it ' s network server is just a tcp / ip protocols stack implemented for a host
  由于pagoda的设计初衷是实现一个结构简单清晰，便于理解的、便于阅读和修改源码的类unix操作系统，它的网络服务器也仅仅是一个简单的tcp ip协议栈在主机上的实现。