Linux

The system call I understand is the interface that the kernel provides for a set of user processes to interact with the kernel. In addition to exceptions and falls, system calls are the only legitimate entry for the kernel. Like/proc is also

Spin Lock thinking: http://bbs.chinaunix.net/thread-2333160-1-1.htmlrecently in See Song Baohua "device driver Development detailed" Second edition, see the Spin lock part, some doubts, so come to ask everyone. Here are some of the ideas I've drawn

1.crontab you can execute a shell script or a series of Linux commands at a specified time.Allows the computer to execute the appropriate plan within a specified time period.2. Example# crontab–e0 6 * * */root/bin/backup.shThis will run Linux at 6 o

$HOME the home directory of the current user$PATH a colon-delimited list of directories to search for commands$PS 1 command prompt, usually $, but in Blash, you can use some more complex values$PS A 22-level prompt to prompt for subsequent input,

In Linux the process uses the struct task_struct to manage all the information needed for a process (so it is generally larger, on a 32-bit machine, about 1.7KB). To be efficient , Linux uses some of the best technologies. Assigning

  The Sysctl command sets the core parameters of the system:   Usage: -Parameter a lists all core settings in the system.   Of course, these core settings are all files stored in/Proc/sys/netDirectory. Here is a representative example: Net.

1. Download jdk: www.oracle.com/technetwork/java/javase/downloads/index.html 2. Decompress jdk: # tar-zxvf jdk-7u60-linux-x64.tar.gz to obtain 3. Open the/etc/profile file and add the following variables: # /etc/profile: system-wide .profile file

A front-end interaction will always encounter such a problem that requires no code to solve. How can this problem be solved?A: You can only go fishing in the ocean. The answer to the question is clear, but the answer is not necessarily reliable,

Set static IP addresses. Run the ifconfig command to view which Nic is used. Edit the NIC file under/etc/sysconfig/network-scripts. The content is as follows: DEVICE = "em1"BOOTPROTO = "static"HWADDR = "78: 2B: CB: 62: 58: 92"NM_CONTROLLED =

★Overview The LED driver mainly implements the hardware driver of four LED lights on the TQ2440 Development Board, the high and low level settings of GPIOB5, GPIOB6, GPIOB7 and GPIOB8 are realized (the pin configuration has been realized in the

1. Download Python3.3.5 of linux. The following is the shared Baidu cloud disk. Pan.baidu.com/s/1i3j238T 2. decompress the package: Tar-zxvf Python-3.3.5.tgz 3. Go to the decompressed directory: Cd Python-3.3.5 4. Create the installation

Get python3.3.0wget javasxzvf Python-3.3.0.tgz into the file cd Python-3.3.0 Add a new python3 installation directory to prevent overwrite older versions of pythonmkdir/opt/python3.3.0 from starting the compilation and installation. /configure --

During system maintenance, you may need to check the CPU usage at any time and analyze the system status based on the relevant information. In CentOS, you can use the top command to view CPU usage. After the top Command is run, the CPU usage status

After CentOS and other Linux systems are started, a read progress bar may appear waiting for the system to enter. We can restore it to display the detailed startup process mode. Use the root user to modify the/boot/grub. conf file. [Root @ Slyar ~]

Frame Buffer is an interface provided by Linux for display devices. It abstracts the video into a device, it allows upper-layer applications to directly read and write the display buffer in graphic mode. Such operations are abstract and unified.

Profile Cleaner is a script program used to reconstruct indexes to reduce browser configuration files and organize SQLite databases. It supports popular browsers and mail clients: firefox, Chrome, Chromium, Konqueror, Midori, SeaMonkey, Thunderbird,

This tutorial teaches Linux users how to change the Umask value of their systems permanently. We recommend that you learn from the newly installed users (if you want to know why, follow these steps) What is Umask? UMASK stands for the user mask or

Log4net solves the problem by providing a logging framework, which provides the implementation of writing to multiple targets, for example, you can use log4net to easily record log information to files, consoles, Windows event logs, and databases

G'mic (GREYC Magic Image Converter) is an editing tool that can be used by GIMP plug-ins or as an independent application that supports Linux and Windows systems. G'mic provides a window that allows you to add more than 500 filters and preview

The Apache server itself has two modules that provide server information. One is the mod_status module, which dynamically displays the running status of the current server, and the other is the mod_info module, it mainly provides server-attached