Linux

Change Linux Method of server host name or machine name IP The host name or machine name can be dynamically changed using the command hostname, or the hostname environment variable in/etc/sysconfig/Network/can be changed permanently.

4. Summary 4.1 kobject, kset, and ktype Kobject, kset, and ktype have three structs, but they are easy to confuse because they are intertwined. L kobject is a basic object in the device model. It contains reference counting, parent-child

In my Linux, there was originally a centos user, and there was a centos folder under the/home directory. 1. useradd fit001 is used to create a new user (when a new user is created, if no user group is specified, a user group with the same name is

To view the memory in Linux, we generally use the free command:[Root @ scs-2 TMP] # FreeTotal used free shared buffers cachedMem: 3266180 3250004 16176 0 110652 2668236-/+ Buffers/cache: 471116 2795064Swap: 2048276 80160 1968116 The following is an

The maximum number of threads for a process depends on three factors: the thread stack size, the maximum memory size of the process, and the number of operating system digits.View system default values:[Root @ c0109 ~] #

In Linux, a WebService client is generated using gsoap. during development, the following problems are encountered: The gsoap version is 2.7.15, but it is not re-compiled, instead, use the wsdl2h and soapcpp2 that come with the toolkit. The version

Linux memory disk Initialization Technology Share final edit Lifelens Linux memory initialization Technology (initrd) is used to support two-phase system boot process. It is a temporary root file system mounted during system startup: here, the root

VM-RedHat 9.0 Board: fl2440, linux-2.6.12 Arm-Linux-GCC: 3.4.1 Line 1 in the Code. If drag is not supported, you can obtain the stroke coordinates, but the icons on the LCD do not respond. I do not know why. # Include # include # include #

# Include Int getrusage (INT who, struct rusage * r_usage ); Getrusage can be used to obtain information about resources of a process. For example, user overhead time, system overhead Time, and received semaphore; The following is the structure of

Install a file system for Linux File Programming Preface: Maybe we have two Linux operating systems and XP, so we can generally access files under XP in Linux, but we cannot access Linux under XP, why?     1. Install the File System   1. because ext2

The two linked lists on the bus record every device and driver. How is the connection between the device and the driver? At this moment, the problem must be thrown out. Is there a device or a driver first? In the past, there were first devices. Each

Storage_probe is a very interesting function with a total length of less than 100 rows, but has done a lot of things. It is like the Back Waist on the football field, such as Chelsea's mark le. It is not remarkable on the court, however, they have

Input subsystem of Linux driver subsystem (3) 3. Device Driver Layer 3.1 Overview Communicates with the input device at the underlying layer to implement the driver of the specific hardware device and obtain the event information generated by the

Synchronization of Linux kernel learning [Critical section and competitive conditions] The so-called critical section is the code segment for accessing and operating shared data. Concurrent access to the same resource by multiple execution threads

Linux Kernel learning interruption [Interrupt overview] An interrupt is essentially a special electrical signal sent to a processor by a hardware device. The difference between exceptions and interruptions is that exceptions must be synchronized

Basic file programming knowledge in Linux I used to read a friend's blog with a very sharp sentence: "All files under Linux". In just five words, I spoke about the importance of the file system in Linux. In the Linux operating system, all the

We followed storage_probe () almost completely, and it seems that everything is about to end, but do you think you haven't understood how the device works so far? USB flash drives are not only USB devices but also "disks". They also need to comply

It has been more than four years since I started writing the Linux series of things, and it has been quite a bit since I sorted out and published the first version. Some people who don't know or know each other asked me how I thought of writing so

Apparently, we saved the data prepared for the inquiry command to a struct we defined, that is, structdata_ptr [36], but we were responding to a SCSI command, the answer is the SCSI core layer. They passed a scsi_cmnd struct, namely, the Server Load

Some common usage of GCC in Linux 1. The GCC compiler compiles programs in four stages: 1> pre-compilation (pre-processing): In the pre-processing stage, the input is a C source file, usually *. C. They generally contain header files such as *. h.