checking out the linux filesystem

... Aug /usr/bin/passwd The Saigon CTT  Redirecting Input and Output  Sometimes the output of a command is a list (ex: ls) and we wish to execute another command on each of the entries, use xargs ... done The Saigon CTT  The while loop Example count=0 while [$count –lt 4] echo $count count=$((count +1)) done Output: The Saigon CTT  Return codes/Exit status  The variable $? contains the ... return code of the previous executed command or application Success ≠0 Failure  The exit n command will cause the script to quit and assign the value of n to the variable $? The Saigon CTT ...

Ngày tải lên: 24/06/2013, 01:25

... ĐÀO TẠO QUẢN TRỊ VÀ AN NINH MẠNG ATHENA Bis Đinh Tiên Hoàng, P Đa Cao, Q.1, TP.HCM Tel: (84-8) 38244041 – 0989012418 www.athena.edu.vn Bài Lab 6: Compiling the linux kernel 1/ Kernel module: - ... TÂM ĐÀO TẠO QUẢN TRỊ VÀ AN NINH MẠNG ATHENA Bis Đinh Tiên Hoàng, P Đa Cao, Q.1, TP.HCM Tel: (84-8) 38244041 – 0989012418 www.athena.edu.vn  Insert lại theo thứ tự sau: - Dùng lệnh lsmod, liệt ... Nội Bộ 91 TRUNG TÂM ĐÀO TẠO QUẢN TRỊ VÀ AN NINH MẠNG ATHENA Bis Đinh Tiên Hoàng, P Đa Cao, Q.1, TP.HCM Tel: (84-8) 38244041 – 0989012418 www.athena.edu.vn II/ Syslog Deamon: 1/ Xem file cấu hình...

Ngày tải lên: 29/09/2013, 20:20

... usage, Linux refers to the kernel and all the other free and open source software found in the typical Linux distribution; that is, the entire Linux ecosystem, not just the GNU components The operating ... names, but they it in a different way We’ll talk more about the differences between symbolic and hard links in the next chapter Further Reading ● 30 The full version of the Linux Filesystem Hierarchy ... Don't Call It “GNU /Linux In some quarters, it's politically correct to call the Linux operating system the “GNU /Linux operating system.” The problem with Linux is that there is no completely...

Ngày tải lên: 20/11/2013, 21:24

... corresponding to the disk or partition containing the filesystem The second one is the directory below which it will be mounted After these commands the contents of the two filesystems look just like the ... upon the face of the keyboard And the Author said, Let there be words, and there were words." The Linux System Administrator's Guide, describes the system administration aspects of using Linux ... some of them Figure 2−1 Some of the more important parts of the Linux kernel Chapter Overview of a Linux System The Linux System Administrator's Guide Probably the most important parts of the kernel...

Ngày tải lên: 25/11/2013, 11:07

... instance, the command will create two files, the file for the regular output and the file for the error output Instead of sending the results of a command to a file, you can redirect to some of the ... completes the name of the file If the directory has other files that start with the same letters, is a file in the current directory with the name and another with the name and no further To display ... perhaps the first who made a successful Linux distribution that started to get used on servers all around the world Linux Turning Mainstream The years between 1993 and 1998 marked the rise of the Linux...

Ngày tải lên: 10/12/2013, 14:15

... call, the kernel assigns to the process a virtual address space that comprises memory areas for: q q q q q q The The The The The The executable code of the program initialized data of the program ... respect, Linux is comparable with the other Unix-like operating systems Reading this book and studying the Linux kernel, therefore, may help you understand the other Unix variants too The 2.4 ... computing the new position of the file pointer whence Specifies whether the new position should be computed by adding the offset value to the number (offset from the beginning of the file), the current...

Ngày tải lên: 21/12/2013, 11:15

... with other window managers There are many aspects of the window manager that can be configured here For now, click on the Theme Manager icon under the Look and Feel menu and then select the Eclipse ... From the Control Center, the user can customize aspects of KDE’s appearance, including the desktop background, the window manager, and the panel Before leaving the Control Center, click on the ... used with Linux UNIX and Linux both rely on the X Window system to display the GUI The X Window system is software that works with the system hardware and graphical applications including the window...

Ngày tải lên: 21/12/2013, 19:15

... Customize the Session The vi Editor includes options for customizing the edit sessions These are summarized in the table below The set command is used from last-line mode to control these options The ... Lab (rm myvifile) Step 13: Close the Terminal Window and Logout Double click on the dash button in the upper left corner of the screen, then click the EXIT icon on the front panel - IT Essentials ... mode, position the cursor to the desired location and use the options shown in table below to delete some of the mistakes Note: These commands are ALL lower case and are entered without the Enter...

Ngày tải lên: 21/12/2013, 19:15

... growth-adoption of the GNU /Linux operating system Linux structure depicted as flows of information among value streams Pareto’s Law & The Linux Project The Linux project & The Virtual Roof Creation ... 1967) All they suggested was that the more complex the environment becomes, the more flexible the structure should be to allow for rapid responses 13 2.7 The Fall of the Old Order These organisations ... out and they make for fascinating reading But the real forte of the case study approach is its power to provide grist for the theoretician’s mill, enabling the investigator to formulate hypotheses...

Ngày tải lên: 18/02/2014, 11:20

... of the zillions of Ethernets throughout the world it is to nd the desired host, and why this should even be an Ethernet These questions all involve what is called routing, namely nding out the ... 149.76.0.0 There are also two network addresses that are reserved, 0.0.0.0 and 127.0.0.0 The rst is called the default route, the latter the loopback address The default route has something to with the ... Otherwise, it will only passively receive any RIP updates and update the local routing table When broadcasting the information from the local routing table, gated computes the length of the route...

Ngày tải lên: 22/02/2014, 13:20

... name A unique name for the filesystem, assigned by the browser root A read-only DirectoryEntry representing the root of the filesystem The FileSystem object is your gateway to the entire API Once ... via the API Browser Support At the time of writing, Google Chrome is the only browser to implement the Filesystem API Version of the browser was the first to see a partial implementation, but the ... absolute path from the root to the entry filesystem FileSystem The filesystem on which the entry resides Methods getMetadata (successCallback, opt_errorCallback) Look up metadata about this entry...

Ngày tải lên: 08/03/2014, 02:21

... Between these systems, they have the bulk of the code patterns that are prevalent throughout the rest of the kernel code, which makes the deciphering of more complex systems such as the page ... and the state of the page determines what it means If the page is part of a file mapping, it is the offset within the file If the page is part of the swap cache, this will be the offset within the ... reclaim pages Three other fields are new, but they are related to the dimensions of the zone They are the following: zone start pfn is the starting PFN of the zone It replaces the zone start paddr...

Ngày tải lên: 08/03/2014, 23:20

... usage, Linux refers to the kernel and all the other free and open source software found in the typical Linux distribution—that is, the entire Linux ecosystem, not just the GNU components The operating ... Public License (the GPL), etc., etc He insists that you call it “GNU /Linux to properly reflect the contributions of the GNU Project While the GNU Project predates the Linux kernel and the project’s ... DON’T CALL IT “GNU /LINUX In some quarters, it’s politically correct to call the Linux operating system the “GNU /Linux operating system.” The problem with Linux is that there is no completely...

Ngày tải lên: 19/03/2014, 13:43

... the origins of the UNIX system and the C programming language, and then consider the two key currents that led to the Linux system as it exists today: the GNU project and the development of the ... known as the Linux system actually derives from the GNU project, Stallman prefers to use the term GNU /Linux to refer to the entire system The question of naming (Linux versus GNU /Linux) is the source ... an encyclopedic reference to the Linux system, from the standpoint of the system programmer, written by none other than the maintainer of the man pages himself? The Linux Programming Interface...

Ngày tải lên: 19/03/2014, 13:43

... just a list of the directories that contain the Linux source code The Source Code Index includes all the Linux symbols referenced in the book; you will find here the name of the Linux file defining ... computed by adding the offset value to the number (offset from the beginning of the file), the current file pointer, or the position of the last byte (offset from the end of the file) The read( ) system ... Understanding the Linux Kernel The down( ) method decrements the value of the semaphore If the new value is less than 0, the method adds the running process to the semaphore list and then blocks...

Ngày tải lên: 25/03/2014, 10:52

... usage, Linux refers to the kernel and all the other free and open source software found in the typical Linux distribution—that is, the entire Linux ecosystem, not just the GNU components The operating ... Public License (the GPL), etc., etc He insists that you call it “GNU /Linux to properly reflect the contributions of the GNU Project While the GNU Project predates the Linux kernel and the project’s ... DON’T CALL IT “GNU /LINUX In some quarters, it’s politically correct to call the Linux operating system the “GNU /Linux operating system.” The problem with Linux is that there is no completely...

Ngày tải lên: 31/03/2014, 17:20

... by these companies or organizations (see section Linux Resources on the Web) The core of the distributions are the same−−they're all the Linux kernel, the GNU Project software, and various other ... have the answer you need: the Debian FAQ and the Linux FAQ • The Linux Documentation Project is the center of the most complete and up−to−date Linux related documentation available; see if there ... in" to the system You can then use the system and run commands As soon as you log in, the system displays the contents of `/etc/motd', the "Message of the Day" file The system then displays the...

Ngày tải lên: 28/04/2014, 17:09

... To explore the history of the UNIX operating system from which Linux is derived and the principles which Linux is designed upon To examine the Linux process model and illustrate how Linux schedules ... Licensing The Linux kernel is distributed under the GNU General Public License (GPL), the terms of which are set out by the Free Software Foundation Anyone using Linux, or creating their own ... restart the process The kernel maintains accounting information about the resources currently being consumed by each process, and the total resources consumed by the process in its lifetime so far The...

Ngày tải lên: 13/05/2014, 00:36

... follows the archetype of a story about the battle between good and evil If we look closely at the plot, biblical themes are also apparent Nag, the snake in the garden, is an allusion to the story ... are personified, and they are also given the ability to be able to speak to each other in English The fact that they are able to speak to each other like human beings makes them seem more real ... I would rather be the deck-hand who stood on the end of the stage-plank with the coil of rope in his hand, because he was particularly conspicuous But these were lonely daydreams—and they were...

Ngày tải lên: 18/06/2014, 17:20