Linux

Qt was successfully mounted through NFS yesterday, but the interface does not know why it is always flashing (temporarily ignore). QT displays a welcome page prompting you to set it for the first time, so it stops because there is no touch screen,

Using a serial port terminal as the Linux console, you can remove the need for additional keyboards, display cards, and monitors, and use the Linux host as an embedded black box for any purpose. It is not difficult to connect a serial port terminal

Abstract Linux boot process, including BIOS power-on self-check post, copy MBR information (start bootloader), load kernel, if you are familiar with grub when mounting the root file security system, you will know that there are three grub types at

Http://hohoqi.blog.163.com/blog/static/10795561201091011199438/ FindFind is a very effective tool that can traverse the current directory or even the entire file system to find some files or directories. Main options:-name Search for files by file

TCP requires ACK, but for efficiency, instead of waiting for ACK every time a piece of data is sent, it tries its best to use the window mechanism to accumulate ack sending, of course, in some special circumstances, Ack still needs to be sent

I. brigde -- bridging: vmnet0 is used by default. Fish annotation: You only need to set the IP address in the VM to allow communication even if the IP address of the host is incorrect. However, if the physical network card is disabled, communication

1. x switching between winsows and text mode ● [CTRL] + [alt] + [F1] ~ [F6]: text interface to log on to tty1 ~ Tty6 terminal.● [CTRL] + [alt] + [F7]: graphic interface desktop. In the two login modes of Linux, a logon environment with only plain

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I. Load average1.1: What is load? What is load average?Load is the measure of how much the computer is working (Wikipedia: The system load is a measure of the amount of work that a compute system is doing)Simply put, it is the length of the process

What is swap? Swap, that is, in the SWAp zone, how many people care about it except when installing Linux? In fact, swap adjustment is crucial to the performance of Linux servers, especially Web servers. By adjusting swap, the system performance

Linux boot process analysis and grub boot program Boot is simple for each of us. But what process does it take to start the entire boot process? Generally, the Linux boot process follows the following steps: 1. Load BIOS hardware information,

1./dev/mtdn: In the MTD architecture of Linux, The MTD partition implemented by the system correspondsCharacter DeviceWhich contains some IOCTL and supports many commands, such as memgetinfo and memerase. Tools such as flash_eraseall in MTD-util are

Seven: I2C Dev node operation now to analyze the above structural diagram of the i2c-dev.c in part. this section provides an adapter operation interface for the user space. this part of the code is actually a module. its initialization function is:

Finally, we read all the code in the uboot phase. The general feeling is that the uboot code is really clever. Reading good code is like reading a good book, reading it repeatedly, thinking carefully, and summarizing it in time. This is the

How can I know what version of Linux I am using? The following methods will give you the answer! View the Linux version: CAT/etc/RedHat-release; 1. Run the following command to view the kernel version:1) [root @ q1test01 ~] # Cat/proc/versionLinux

  1. Linux kernel Startup Process OverviewAn embedded Linux system can be divided into four parts: Boot Loader, Linux kernel, file system, and application. Bootloader is the first code executed after the system is started or reset. It is mainly used

1. Kernel configuration Device Drivers ---> [*] USB support ---> USB serial converter support ---> USB serial converter support USB prolific 2303 single port serial driver   2. Compile the kernel. Load the kernel on the embedded board. after

/**************************************** Author: Li Yannan* Time: 2006-02 2* Function: detects the local network.****************************************/ # Include # Include # Include # Include # Include # Include # Include # Include # Include #

1. Linux time1.1 Linux Time System1.2. Time-related data structure in Linux 2. Obtain the current time 3. latency 4. Timer4.1. Alarm4.2. setitimer 1Linux time1.1 Linux Time SystemUNIX and Linux time systems start from epoch (the beginning of the

Recently, I encountered the following code in terms of kernel exposure: Struct list_head {struct list_head * Next, * Prev; // bidirectional linked list}; # define list_head_init (name) {& (name), & (name)} # define list_head (name) \ struct