Cloud Applications

The only reason for concurrent execution control on Linux devices is hardware interruption. Kernel code can be preemptible. What is competition? : When two lines are executed [have the opportunity to operate on the same data structure (or hardware

We often receive questions from our VPS users. my VPS does not have any new things. Why is my hard disk less used ?, This is mostly because of the long-term accumulation of various logs on the system, such as nginx, apache, and other access log

In Linux, the priority of processes is increased by-20 to 19. the higher the number, the lower the priority. You can use the top command to view the NI column. There are two methods to change the process priority: www.2cto. com1, top command. Enter

Centos is used to build the SVN server and configuration file. 1. Installation # yuminstallsubversion: the version svnserve and version1.6.11 (r934serve) are displayed at the end of yum installation, indicating that the installation is successful.

To install svn in linux, follow these steps: 1. download the latest src package of subversion and apache 2. create a user: svnroot. the following operations are not particularly described as root user operations # groupaddsvn # us... To install svn

The profile file cannot enter the ubuntu issue. yesterday, I configured the java environment, modified the profile file, saved and restarted, and entered the login page. I couldn't enter the password, so I went crazy !!! Enter the logon page, press

When you use the mail command in Ubuntu to send an email to back up data, you need to log on to the server every day to check whether the backup is successful. So I learned how to use shell to send emails to my mailbox in linux. here we use ubuntu

Use of Linuxsar commands 1. common sar Command line formats: sar [options] [-A] [-ofile] t [n] in the command line, the n and t parameters are combined to define the sampling interval and number of times. t indicates the sampling interval, which is

After the liunx system time synchronization fails, the liunx server can only use the crontab of the liunx to regularly synchronize the time: Java code ntpdateasia. pool. ntp. orghwclock-wclock-wwww.2cto.comcrontab-e0 */1 ***/usr/s... After the

In Linux, the common form of the find command is [html] findpathname-options [-print-exec-OK]. the parameters are described as follows: pathname: find command to find the directory path. Www.2cto.com-print: find command to output the matching file...

Sersync sets synchronization of files on multiple machines [html] home page on one of the 192.168.0.1 install sersync directly from the Internet find the source code unzip it, unzip the directory for:/home/GNU-Linux-x86/confxml preparation. xmlwatch

Configure the IP address of the XeroxPhaser3125N printer to connect the XeroxPhaser3125N printer to the network line and turn on the power. Press and hold the Cancel key on the printer until the printer prints the Configuration page. Write down

12 methods for linuxshell to process text line by line 1. cat $ filename | whilereadline example: functionwhile_read_line {cat $ filename | whilereadlinedowww.2cto. comech... 12 methods for linux shell to process text line by line 1. cat $ filename |

Set the nginx data receiving and sending interfaces. 1. Data receiving: // readv distributes the data read to the buffer zone in the same order as above. Readv always fills up a buffer before entering the next one. Readv returns the total number of

Linux signal processing mechanism principle of signal processing mechanism: the kernel sends a soft interrupt signal to a process, which is set to correspond to the signal bit in the signal field of the process entry. What we need to add here is

In the virtual machine bridging environment, it is found that BT5r3 will automatically modify the DNS settings. step 1. disable automatic DNS modification. use the following method to disable automatic DNS modification, retain the system's dns

Some basic concepts of linuxOS 1. what is OS? Www.2cto.com is a simple and good question. but if I really want to answer it in a slightly formal official language or text, can I really make it clear? Well, I will answer the question in my own

Linux Nic binding and multi-vlan implementation 1. first stop networkservice: # servicenetworkstop2. create bound0 virtual interface # cd/etc/sysconfig/network-scripts # touchifcfg-bound0 # viifcfg-bond0DEVICEbond0BOOTPROTOstati Linux Nic binding

The general process of creating an RPM package by yourself is 0. first install the rpm-build toolkit 1 and create the RPM Directory # mkdir ~ in your user directory ~ /Rpm ~ /Rpm/BUILD ~ /Rpm/RPMS ~ /Rpm/RPMS/i386 ~ /Rpm/RPMS/i686 ~ /Rpm/RPMS/noarch

Broadband dialing for ubuntu wireless connection needs to connect to a wireless router to access the internet yesterday, but I did not expect to connect to the wireless router, but still need to make adsl dialing to access the internet, however, the