Linux

Linux Basic Operations Command 1Use the format for Linux commandsCOMMAND [Options] [arguments parameters]Su:switch User for switching usersSU User nameWhen a user password is entered for the change, and a password is entered in Linux, the

Before you install Jenkins. First make sure the JDK and Tomcat,maven are configured.For detailed configuration methods, please see my blog.Installation and configuration of JDK:JDKInstallation and configuration of Tomcat:tomcatInstallation and

Ifconfig: To view information about a network card that has already been activated to use the Ifconfig command, you must install the Net-tools program yum install net-tools-y Eno begins with the representation of the virtual machine NIC

Linux Network and RPM-installed Yum Source Configuration 1.Linux Network1. Use the Ifconfig command to maintain the network (see Linux System Management P422)1) function of the Fconfig command: Displays the details of all the network cards being

1. Download OT installation packageQt5.30 the following, open the Web page to find the required resources, download the. Run format of the installation software.Http://download.qt.io/archive/qt/5.3/5.3.0/qt-opensource-linux-x64-5.3.0.run.mirrorlist2.

Example of C program use for binder systemsIpc:inter-process Communication, interprocess communicationRpc:remote Procedure Call, remote procedure callsHere we use only the BINDRT system that has been implemented in the Android system directly.The

I. Buffer and the role of the cachebuffer: Something in memory that has not yet been written to the disk.Role: In order to solve the CPU to the disk storage something when the speed difference, will accumulate a large wave of something again to disk

Sed is an online editor that processes a single line of content at a time. When processing, the currently processed rows are stored in a temporary buffer called pattern space, followed by the SED command to process the contents of the buffer, and

1, the official website download Jenkins.war Package 2, executes the command: Mv/opt/jenkins.war/opt/apache-tomcat-7.0.77/webapps 3, launches the Tomcat server, executes the start command under the Tomcat/bin directory: ./startup.sh4. Input

1. Using the cat command to merge files vertically1) Master the vertical merging of files using the cat command:A) For example: Use the cat command to vertically merge the three files of Baby.age, baby.kg, and baby.sex into a baby file:Cat Baby.age

The decompression instruction is:TAR-ZXVF jdk-8u131-linux-x64.gzTo set the environment variable, start by opening the folder where the environment variable is set, the instruction is:vi/etc/profileThen in the English input method to switch to the

Due to the fact that the CentOS source is not very useful, it is intended to be replaced by 163 and the operation record is as follows:wget Http://mirrors.163.com/.help/CentOS6-Base-163.repo #下载163yum源MV Centos-base.repo Centos-base.repo.back

Create directory under folder: My, new file in my directory 123.txtmkdir my Touch my/123. txtTo establish a soft connection:Ln my haha-sRM-RF delete hahaRM -123. txt still existsRM-RF Delete haha/rm -rf haha/#haha, my is still there, my is

Linux Basic Part OneI. INTRODUCTION of Linux1. Mastering the definition of Linux: Linux is a free-to-use and free-spread UNIX-like operating system, a POSIX and UNIX-based multi-user, multitasking, multi-threaded and multi-CPU operating system.2.

See an example to understand. Create a new Makefilewith the following content:Copy CodeIfdef Define_vreVRE = "Hello world!"ElseendifIfeq ($ (OPT), define)VRE? = "Hello world! First! "endifIfeq ($ (OPT), add)VRE + = "kelly!"endifIfeq ($ (OPT),

1. Want to see the file named "ABC" in the current folder and sub-folder# Find. -name ABC. : Represents the current directory-name: Indicates that you want to find by name2. To see if there is a "xyz" directory in the current folder and sub-folder#

1.date View system time, modification time date month day time year,2. Clear the screen, clear it with ctrl+l, or use clear,3. View system users, using the WHO command4. Create a new user James, create a password，5. Switch to the root user, use the

In my inside has introduced the Linux the following C's process, the thread interface, here does not do too much elaboration.Multi-processMany processes here use traditional multi-process models. Whenever a connection is made to a client, a process

The array definition in the shell:You can define an array as a whole:Array_name= (value0 value1 value2 value3 ...)Or:Array_name= (Value0value1value2value3 ...)At this point the array's subscript defaults to 0, and the individual components of the

Introduction to the programming language and C Language 1. What is a program? Command the computer to execute the action we want it to do, and execute a group of commands in sequence 2. What is the role of the program? Command computer work 3.