computer operating system built on linux kernel
GNU/Linux Basic operating system ppt
... installation 111 5.4.2. Aspects common to the different methods of installation 111 5.4.3. Network module installation 112 5.4.4. Network configuration 113 5.4.5. apt configuration 113 5.5. Conclusion ... operations 68 3.11. Conclusion 69 4. GNU /Linux installation 70 4.1. Introduction 70 GNUFDLã PID_00148393 Basic GNU /Linux 4.2. Booting 70 4.3. Partitioning the disk 71 4.4. Installation of modules ... installation 83 5.3.2. Booting the installation system 84 5.3.3. Installation language configuration 88 5.3.4. Keyboard configuration 89 5.3.5. Detecting and mounting the CD-ROM 90 5.3.6. Network configuration...
Ngày tải lên: 08/03/2014, 23:20
UNIX LINUX Operating System
... Unix /Linux ã Some facilities Distributions Linux ã Distribution = A collection of all or some programs altogether around a Linux kernel which allows to install a collaborative system, operating ... Chronology (Cont.) ã At the end of 80s, 2 organizations said hello UNIX International (UI) ã The agreement between AT&T and Sun : SVR4 (System V Release 4), The converged Edition of System ... Unix kernel architect Content ã Unix /Linux Chronology. ã File System ã Process Management ã User Management ã Networking with Unix ã Programable Filters ã Programming with Shell & C on Unix /Linux ã Some...
Ngày tải lên: 09/05/2014, 08:45
Security On Linux System
... khi Client/Deadmon có địa chỉ phù hợp với nội dung được cho phép trong /etc/hosts.allow 7) Sử dụng chế độ bảo mật mặc định của Kernel Trong Kernel của một số hệ thống Linux mới hiện ... /etc/syslog.conf, dưới đây là một phần của File cấu hình: # Monitor authentication attempts auth.*;authpriv.* /var/log/authlog # Monitor all kernel messages kern.* /var/log/kernlog # Monitor ... phép root mới có quyền thực thi nó. ã Sudo Root Access Control Tool http://www.sudo.ws/ ã Snort Network Intrusion Detection System http://www.snort.org/ ã Tripwire File Integrity...
Ngày tải lên: 13/06/2014, 14:54
Security On Linux System ppt
... <Directory /> Options None AllowOverride None Order deny,allow /sbin/lilo: image = /boot/vmlinuz-2.2.17 label = Linux read-only restricted password = your-password Kernel OpenWall ... khi Client/Deadmon có địa chỉ phù hợp với nội dung được cho phép trong /etc/hosts.allow 7) Sử dụng chế độ bảo mật mặc định của Kernel Trong Kernel của một số hệ thống Linux mới hiện ... /etc/syslog.conf, dưới đây là một phần của File cấu hình: # Monitor authentication attempts auth.*;authpriv.* /var/log/authlog # Monitor all kernel messages kern.* /var/log/kernlog # Monitor...
Ngày tải lên: 18/06/2014, 10:05
Security On Linux System pot
... /etc/syslog.conf, dưới đây là một phần của File cấu hình: # Monitor authentication attempts auth.*;authpriv.* /var/log/authlog # Monitor all kernel messages kern.* /var/log/kernlog # Monitor ... khi Client/Deadmon có địa chỉ phù hợp với nội dung được cho phép trong /etc/hosts.allow 7) Sử dụng chế độ bảo mật mặc định của Kernel Trong Kernel của một số hệ thống Linux mới hiện ... rất rộng rãi trên các hệ thống lớn. <Directory /> Options None AllowOverride None Order deny,allow Security On Linux System Power by: N.X.Bi O==(=========> ^($)^ Supporter Of...
Ngày tải lên: 27/06/2014, 08:20
Operating System Concepts - Chapter 1: Introduction.Chapter 1: IntroductionWhat Operating Systems Do Computer-System pot
... â2005 Operating System Concepts 7 th Edition, Jan 12, 2005 Four Components of a Computer System Four Components of a Computer System 1.13 Silberschatz, Galvin and Gagne â2005 Operating System Concepts ... Introduction Chapter 1: Introduction What Operating Systems Do Computer- System Organization Computer- System Architecture Operating- System Structure Operating- System Operations Process Management ... Galvin and Gagne â2005 Operating System Concepts 7 th Edition, Jan 12, 2005 Computer System Structure Computer System Structure Computer system can be divided into four components z Hardware –...
Ngày tải lên: 28/06/2014, 02:20
Operating System Concepts - Chapter 21: The Linux System pot
... â2005 Operating System Concepts 7 th Edition, Feb 6, 2005 Kernel Synchronization (Cont.) Kernel Synchronization (Cont.) Linux uses two techniques to protect critical sections: 1. Normal kernel ... â2005 Operating System Concepts 7 th Edition, Feb 6, 2005 Components of a Linux System (Cont.) Components of a Linux System (Cont.) The system libraries define a standard set of functions through ... â2005 Operating System Concepts 7 th Edition, Feb 6, 2005 The Linux System The Linux System Linux uses many tools developed as part of Berkeley’s BSD operating system, MIT’s X Window System, ...
Ngày tải lên: 28/06/2014, 02:20
Formal Models of Operating System Kernels phần 10 pot
... out (in Chapter 1) that file systems are not considered part of the kernel. File systems are certainly part of the operating system but not part of the kernel. They are considered privileged code ... directly access kernel services such as device drivers, but they are not considered by the author to be kernel components—they rely upon the abstractions and services provided by the kernel. File systems ... implementation can be justified by formal refinement. As far as the author is concerned, the most signicant omissions are: ã initialisation; ã asynchronous signals. The initialisation operations for each kernel...
Ngày tải lên: 23/07/2014, 23:20
Formal Models of Operating System Kernels phần 9 potx
... store. Proof. The operation retrievePageFromDisk[page/pg ] is a conjunct in the second component of the sequential composition in genOnPageFault. ✷ Proposition 162. If there are free pages, only a free page ... Virtual Storage 285 Finally, a second specification can be considered as an optimisation. This version retains the queue of requests. It differs from the second version by creating a new instance of ... observational equivalence and bisimilarity. The propositions concerning equivalence of the various versions of the subsystem were all proved using the Concurrency Workbench. Proposition 165. Processes...
Ngày tải lên: 23/07/2014, 23:20
Formal Models of Operating System Kernels phần 8 pot
... obvious given the above definitions. It is now possible to state an important proposition about the kernel. Proposition 123. Only one user process can be in the kernel at any one time. Proof. First, ... of the proposition. What is intended by the proposition is the following: at any one time, it is possible for at least one and at most one system call to be processed. Since system calls are: ... paging disk is part of the subsystem whose design will be discussed in the next few subsections. The subsystem’s organisation and interactions are shown in Figure 6.2. It consists of an ISR, a handler...
Ngày tải lên: 23/07/2014, 23:20
Formal Models of Operating System Kernels phần 7 doc
... is not the only one. The Xinu operating system [9] is also based on message passing but does not integrate messages with interrupts and is, therefore, in our opinion, a somewhat cleaner kernel design. ... With one more level of expansion and simplification, this becomes: cpd.inmsgbuff = spd?.outmsgbuff This is clearly the operation required in the statement of the proposition. ✷ Proposition 122. ... creation message types also contain a first component of type PCODE : this is the code of the process that is to be created. The reader should note that what is going on is actually a conflation of...
Ngày tải lên: 23/07/2014, 23:20
Formal Models of Operating System Kernels phần 6 pptx
... operations in this kernel, so the process creation primitives are, really, of limited use. Even though the kernel is so limited, it is reasonable useful. In the next chapter, a larger kernel, one ... operating system kernel that is based upon the exchange of messages between processes. The kernel should be an example of the interrupt-driven variety. In this class of kernel, all context switches ... real-time systems. The àC/OS [18] is a good example of such a kernel. The kernel is minimal in the sense that it contains no facilities for per- forming device-specific operations and contains no...
Ngày tải lên: 23/07/2014, 23:20
lesson 9: Linux Operating System Vulnerabilities and security pdf
Ngày tải lên: 29/07/2014, 08:20
