Linux

"Introduction to the difference between:> and >>" 1> is directed output to a file, if the file does not exist, create a file, if the file exists, it is emptied; generally, when we back up the cleanup log file, it is this method: first back

Unbantu, first copy the DVD's vmwarew.gz and files to the TMP file. And thenTar zxf VMware Tools-0 ....Ls./intall.plThere is a file that is copied to the Root/temp folder first. Then unzip the installation. The specific installation process is as

Installation InstructionsInstallation environment: Red Hat Enterprise Linux7.1Installation method: Source InstallationSoftware: jdk-7u80-linux-x64.gzInstallation#首先查看系统原有JDK信息rpm-qa | grep java# Delete the original OPENJDK installation, use our own

The less command can be paginated for files or other output, similar to Moe commands, but much more powerful than the more commands.The navigation command in less is similar to VI, as follows:1 SearchWhen you open a file using the command less

1.SSHD Remote Connection2.rsyslog/syslog log related software, which is a mechanism provided by the operating system, the system daemon usually uses the Rsyslog program to write various information in the log files of each system3.network If you

Network Internet:1. Network BasicsThe concept of the networkThe function, characteristic, composition and structure of the network;Two network models (ISO/OSI,TCP/IP)2. Network Build Knowledge:Switch BasicsRouter Basics3. Advanced network

Removing users under Linux is more than just userdel-r.If you delete the user, the user has many processes in progress, you are not going to kill each and then delete;If you successfully delete the user, the system also has to change the user's

1, in the Platform bus practice link in one and two, respectively, the LED Platform_driver and Platform_device initially completed, next see Platform_device and platform_driver simultaneously exist effect, Is the LED platform device has been

Delete default directoryAfter you install Tomcat, delete all directory files that are default under $catalina_home/webappsrm-rf/srv/apache-tomcat/webapps/*User ManagementIf you do not need to deploy the app through the web, it is recommended to

CatAdd a line number to the content of a and write to B: Cat-n a > B append the contents of a to the B: Cat-b a >> b empties a:cat/dev/null > ACksum:Used to check if the file's CRC is correct. Ensure that files are not damaged while they are being

a what is a regular　　A regular is a way to describe a character or string by combining symbols with special meanings, called regular expressions. Or, the regular is the rule used to describe a class of things.There are regular things in life:For

I. Samba ServicesSamba services are primarily used by Linux servers to share files with Windows usersThe following 5 steps are required to configure the server1. Preparing the Environment1) Turn off firewall systemctl stop FIREWALLD2) temporarily

1. Fuzzy matching is full-text matching;A regular expression is a keyword match that contains^ Opening$ end^$ Empty Line. Any one character\ Invert Righteousness* Repeat 0 to several times before one character. * Any number of characters? Preceded

Linux Server Analysis OptimizationLinux Memory usage AnalysisHow much memory is used by the 1.linux systemIn the case of system use, we can use Free,top,vmstat, or cat/proc/meminfo to get the usage data of system memory, but the results shown to us

An existing environmentPython 2.6.6JDK 1.7-tomcat-Version: 7.0The suspected Tomcat version needs to be consistent with the JDK (no textual researchWebsite:http://tomcat.apache.org/· Unzip to/usr/local/after downloading the package(See Mood Create

NFS Service (based on CentOS 7.0)NFS, the network file system, is a file-sharing service between Linux and Linux, and in NFS applications, local NFS clients can transparently read and write to files located on the remote NFS server as if they were

pwd: Querying the current directory'/' represents the root directory, and/root is not the root directory.CD: Change directory, switch directories. CD/ : Switch to the root directory. CD: Return to the top level directory. tab Auto-complete.ls: View

In Linuxserver, it is often necessary to locate the network problem, it needs to use the clutch.Example: Tcpdump-x-S 0 host 10.17.81.22 and Port 9999-w/home/text.cap-i Eth4The above meaning is to crawl and 10.17.81.22 server port9999 to communicate

Start process1, press the power supply2,bios self-test; main hardware equipment such as: CPU, memory. The hard disk and other graphics devices are normal, after the test is completed, will follow the BIOS system setup sequence to boot.3, System

Turn from: http://blog.csdn.net/u010053050/article/details/52388663 Http://www.rehack.cn/techshare/devtools/842.htmlFirst you will upgrade to the WIN10 anniversary update and install the Linux subsystem.WIN10 's Linux subsystem gives us an