Linux

The log log analysis of the site is the necessary work that every webmaster often do, through the website log file we can analyze the major search engines on the site crawl situation. Recently my site made some adjustments, so want to see the log

First, install JDK reference postInstalling JDK with Yum (CentOS)1. See which JDK versions are available in the Yum Library 12345678910111213141516171819

1. Process definitionProcess is the work that the CPU does not complete2.ps commandPsl long format output;U displays the process in the order of the user name and start time;J Use the task format to display the process;F to display the process in a

Linux files are hierarchical structure, but we usually log on to the host when the use of a variety of shell and no graphical interface, it does not seem intuitive, Linux has a small command called tree, you can display the file structure in the

The birth of the ancient memory-unix multics plan--begin.This is an operating system project operated by MIT, General Electric and T-Bell Labs for use on the GE-645 mainframe. But because the whole goal is too large, Multics released some products,

Directory/File ManagementDirectory Management:1.ls2.cd3.pwd4.tree: Viewing the directory tree5.mkdir: Create an empty directory-P: Create parent Directory-V: Show the process of creationCommand line expansion:Mkdir-pv/mnt/test/{x/m,y} # creates two

Transferred from: http://blog.csdn.net/sunnylgz/article/details/8055315Before using Ubuntu, I believe many people have experienced the use of Windows systems. If you've backed up your Windows system, you must remember that you first need to find a

Virtual machine version Default user root password ToorLS: Displays the files and folders contained in the current directoryLs-l: Displays the files and folders contained in the current directory in the general format (the opening letter explanation:

The Linux catalogue's special1,/root is the vertex of all the items2. The structure is like an inverted tree3, the catalogue and the magnetic disc division is not related4,/root under different records may be different in the region and the magnetic

There are a lot of interesting things in Linux, and this article has been sorted out. Excerpt:1. SL commandYou will see a train from the right side of the screen to the left ...Install the sudo apt-get install SLRun $ slThe command has-alfe several

SAR command parameters A lot, there is time man a bit. The-n parameter is useful, he has 6 different switches: DEV | Edev | NFS | NFSD | SOCK | All. The dev Displays the network interface information, Edev displays statistics about network errors,

First, prefaceStrictly speaking ALARM timer is also a POSIX timer part, contains two types of Clock_realtime_alarm and Clock_boottime_alarm. Add _alarm to Clock_realtime and Clock_boottime, respectively. A POSIX timer other than the Alarm timer

awk Introduction to Commands: awk is a powerful text analysis tool , and Typically,awk is used for each line of the file as a processing unit. awk processes the text by executing the corresponding command for each line that receives the file.1 .

Linux file Basic PropertiesLinux system is a typical multi-user system, different users in different positions, with different permissions. In order to protect the security of the system, the Linux system has different requirements for different

The difference between BASHRC and profileTo understand the difference between BASHRC and profile, first figure out what is interactive shell and non-interactive shell, what is Loginshell and non-login shell.The interactive mode is where the shell

---restore content starts---Log Save locationThe default Var/log directoryPrimary log filesKernel and public message log: MessageScheduled Task log: CronSystem Peach LOG: DemsgMail system log: MaillogUser login

Performance analysisVmstatVirtual Memory StatisticsUsage Usage: Vmstat [Options] [delay [count]] Options: -A,--active active/inactive memory -F,--forks number of forks since boot -M,--slabs Slabinfo -N,--one-header do not

Beginner Linux, you need to understand the Linux standard directory structure first/ Root---Some of the core files used when starting Linux. such as operating system kernel, boot program grub and so on. Home---Store personal files for ordinary

Ubuntu 16.04 Samba server, ubuntu16.04 The Samba server is built to implement a Linux shared directory, which can be directly accessed in Windows. This section describes how to build the Samba service in ubuntu 16.04. 1. Install the Samba

Rsync timing synchronization configuration and rsync synchronization ConfigurationAttach script For the three configuration files, see rsync installation and configuration. #!/bin/sh#linuxsir.org home backup #/usr/bin/rsync -avzP