operating system book

In order to deepen the understanding of the operating system, I decided to follow the "30 days of homemade operating system" this book practice. The GitHub link for the project is https://github.com/YatesXu/YatesOSASK/ About the Hex editorThe first problem is that the hex ed

System encryption: 1. Windows Windows is the most widely used operating system, and the login password before entering Windows naturally becomes our second barrier. Windows XP supports multiple users. Each user can set his/her own personality as needed, such as desktop icons, wallpapers, shortcuts, and so on. User accounts can be divided into three levels by powe

I. Purpose and Requirements1. Purpose of the experiment(1) Master the definition and concept of the operating system;(2) Understand the development history of various types of operating systems;2 . Experimental requirementsUse Web search to learn about various types of computer operating systems and organize them into

server market. Linux two major publishers now go to the Linux server market route, it can be seen that Linux as an enterprise-Class server has a huge development prospects, according to the authoritative department statistics, Linux in the server market share continues to rise every year.In fact, many Linux applications are for Linux servers, this book is mainly for Linux in the various applications under the server deployment.Second, develop a good

data segments?) ） The glibc is used to satisfy the large allocation, the threshold value is generally 128KB p = mmap (NULL, 512*1024, prot_read| Prot_write, map_anonymous| Map_private,-1, 0); mallopt* $ malloc_check=1./test P300 do not use ALLOCA () allocated memory as arguments to function calls C99 variable length Array (vlas): Char buf[i]; Memory operations Memset, bzero ==〉 priority to use Calloc? memcmp

Yesterday because the project needs to access the system Address Book to get the phone number, so from the ignorance, began to Daoteng, Daoteng an afternoon, finally finished. Write this blog is to record, the next time you do not make a mistake. At the same time, I have the same rookie can avoid a detour.Well, to get started, to access the system's address book,

@ IOS calls the library file used to operate the address book AddressBook. framework AddressBookUI. framework # Import "HMTMainViewController. h "# import @ interface HMTMainViewController () @ property (nonatomic, strong) ABPeoplePickerNavigationController * personPickVC; @ property (nonatomic, strong) UIWebView * phoneCallWebView; @ end @ implementation HMTMainViewController-(id) initWithNibName :( NSString *) bundle :( NSBundle *) handle {self = [

included with SQL ServerDatabase Not supported The resource database is located in the Mssqlsystemresource.mdf file,The file contains nearly the code. Therefore, SQL Server cannot back up the resource database.However, it can be done through file backup and backup to disk, and not through SQL Server when restoring.To restore these backups, you can only manually restore the backup copy of Mssqlsystemresource.mdf.And be careful not to overwrite the current resource database with a

In many cases, we have to use the operations of selecting contacts. It is very troublesome to write it by ourselves. Instead, it is better to directly call the system's address book. Let's look at the requirements below: Requirements:When an edittext button is clicked, go to the system address book. Select one address