Linux

The Linux kernel must be compiled using the GNU gcc compiler, and GCC provides a number of C language extensions that provide strong support for optimization, target code layout, and more secure inspections. Therefore, the C syntax used by kernel

1. First, write the C program HELLOWORLD.C: #include #include #include static int hello_init (void) { PRINTK ("hello world!\n"); return 0; } static void Hello_exit (void) { PRINTK ("goodbye!\n"); } Module_init (Hello_init); Module_exit

Linux under grep displays multiple lines of information The grep under standard Unix/linux controls the context through the following parameters Grep-c 5 Foo file displays the line in the file matching the Foo string and the top and bottom 5

It person life Leisure 2017-02-04 09:39 Root is the Linux system's Super Administrator, to save a good password, and requirements to be complex, it is best to have numbers, letters, symbols, and more than 8, generally require random generation. If

A new text file Vi/etc/init.d/nginx II, add #!/bin/bash# nginx Startup script for the Nginx HTTP Server# It is v.1.12.0 version.# Chkconfig:-85 15# Description:nginx is a high-performance Web and proxy server.# It has a lot of features, but it ' s

1. Several important data structures: 1.struct Irq_desc; Represents an interrupt number of 31struct Irq_desc; 32typedef void (*irq_flow_handler_t) (unsigned int IRQ, struct irq_desc *desc); 175struct Irq_desc {176 unsigned int IRQ;//Interrupt

Yesterday spent a whole day to finish Linux, today cheerfully to the U disk on the file copy the past. Because listen to colleagues that can be like under Windows as direct double-click the U disk, so do, which had wanted to wait for a half-day Leng

1. How to install Hiredis under Linux 1) Download Address Https://github.com/redis/hiredis 2) Compiling and installing The unpacked folder executes Make;make install; 3) header file contains Include 4) Compilation options Add ldflags =-lhiredis in

Http://xgboost.readthedocs.org/en/latest/build.html#python-package-installation A two-step: The the shared library from the C + + codes (libxgboost.so for LINUX/OSX andlibxgboost.dll for Windows). Exception:for R-package Installation Please directly

When installing the test flume, I found that Telnet was not installed and the use of Yum and RPM commands was recorded.If Telnet is not installed, you need to install using the Yum command.-1, first check to see if Telnet is installed: Rpm-qa |

Nginx wiki Chinese station: http://wiki.nginx.org/Chs Add Users and Groups Groupadd www useradd-g www-m www 1. Pcre Library for installing Nginx Tar zxvf pcre-7.8.tar.gz cd pcre-7.8/./configure make && make install CD. / 2. Installation Nginx Tar

Reference Click Open link The number of Linux kernel files is nearly 20,000, which eliminates the related files of other architecture CPUs, and has more than 10,000 s3c2410, s3c2440 two chips. The organization of these files is not complex, they are

recently began to study Linux, but also used before, but with the company bought Cloud server, now began to install their own virtual machine in the way Linux, as a learning. In the course of the process encountered some problems, summed up, but

The problem with bash:/opt/ros/indig/setup.bash:no such file or directory always appears when you open a terminal in Linux some time ago. This issue is related to the bash that is loaded each time the terminal is opened, so the documentation for

1. What is IP addressInternet Protocol ADDRESS # #网络进程地址IPv4 Internet Protocol version 41.2 Binary X32IP is made up of 32 0111111110.111111110.111111110.111111110 = 254.254.254.2542 Subnet MaskUsed to divide the network areaSubnet mask not 0 bits

Linux bind-utilsFirst, IntroductionDNS is a service that resolves a domain name to an IP address. such as: www.turbolinux.com.cn through DNS resolution, you can get 210.77.38.126.Bind is a DNS service program under a Linux system. Bind-utils is a

Because of the security needs, the system generally has only one root user, so if you forget the root user login password, so you need to change the password by other means.1. Via single-user mode(1) Restart the system and press any key to enter the

[Email protected]:~#Cat/etc/passwdroot:x:0:0: root:/root:/bin/bashdaemon:x:1:1:d aemon:/usr/sbin:/usr/sbin/nologinbin:x:2:2: bin:/bin:/usr/sbin/nologinsys:x:3:3: sys:/dev:/usr/sbin/NologinSync: x:4:65534:Sync:/bin:/bin/Syncgames:x:5: -:

1 First Officer net download installation package; You can also download resin directly from the command line;sudo wget http://caucho.com/download/resin-pro-4.0.56.tar.gz;Download complete to unzip in the directory that needs to be installed:sudo

Linux 12th Day LVMTime: 20180728DirectoryLVM ConceptsImplementation of LVMPV created, VG created, LV created, mountedLVM expansion, reductionLVM SnapshotLVM Logical Volume ManagerFunction: The focus is on the flexibility to increase the file system