Linux

On a linux server, run the following command to view the current number of connections: netstat-n | awk '/^ tcp/{++ S [$ NF]} END {for (a in S) print, S [a]} 'last_ack 14 SYN_RECV 348 ESTABLISHED 70 FIN_WAIT1 229 FIN_WAIT2 30 CLOSING 33 TIME_WAIT 181

Run Terminal 1 in vim, you may want to have such an experience, you can run the terminal in vim, very fun, Conque plug-in gave us a solution,: http://www.vim.org/scripts/script.php? Script_id = 2771, which is easy to install. You can solve it

An error occurred while attaching the driver to ubuntu 12.10. Recovering the Ubuntu 12.10 Unity image has been released today. I downloaded and installed it as soon as possible, there is an additional driver in the "software source" of "system

Linux rsync + inotify real-time file synchronization Application Scenario: synchronization receiver: test01 receiving directory:/opt/software/test/a/synchronization initiator: test02 synchronization directory: /opt/software/test/a/Add, create,

Linux find COMMAND notes (refer to the third edition of laruence) find [PATH] [option] [action] Or find path option [-exec COMMAND {}\; 1. time-related options: a total of-atime,-ctime is not-mtime, and the-mtime description-mtime n: n is a number,

Check the number of apache connections frequently and find many useless time_wait connections. Some people say this is normal because a request is interrupted midway through; others say that Microsoft's IE connection will generate more Time_wait

In linux, The sudo configuration uses Sudo to allow a user to execute certain commands as a Super User, it also allows others to execute some commands-this is especially useful for system management. To use sudo, you must have your own user name and

If the system is migrated to the linux platform, the user cannot log on to the solution. Description: The system is migrated from the Windows platform to the linux platform. After importing the database, Click Log On without any response. Cause:

Introduction to clock and time in Linux 1) Introduction to the basic concepts of clock in Linux 2) exploring how the hwclock command works. 3) synchronization between the system clock and the hardware clock in Linux during system startup. Main terms

Text/figure Tian Ming (Ansty)At present, some universities and internal enterprises in China use ruijie or harbor certification, which guarantees their own security, but these certifications have many annoying restrictions. For example, when the

Installing openvpn in Ubuntu is simple. apt-get install openvpn. Build key, server, and client configuration. For more information, see openvpn maintenance. The DNS information on the server can be obtained from/etc/resolv. conf.After openvpn is

Linux, as a multi-task and multi-user operating system, may be used by multiple users within the same period of time, and user management is directly related to the security of the entire system, users need to emphasize and protect password

Execute this code in Linux: () {:|:&};:will cause a crash. Once executed, the only method is to restart the system. In fact, this code is an infinite recursive code that consumes system resources. This article provides a detailed explanation of this

Operating System: Fedora 14 Web Version: Apache2.2.17 IPv6 must be supported First, Apache2.2.17 itself supports IPv6. Apache installation is not described in detail. This can be done by google. For example: # Yum search apache // If yes,

By default, Apache does not limit the number of connections from the same IP address. In practice, the number of connections from the same IP address is usually large, which affects the server performance. To avoid this situation, you can configure

View hardware configuration in LINUXCommon commands are as follows:View the serial number of the motherboard: dmidecode | grep-I serial numberUse the hardware detection program kuduz to detect the new hardware: service kudzu start (or restart)View

After encountering this problem, I searched for it and integrated your suggestions. If method 1 is used, no error is reported, but the availability of RPM is not confirmed. 1, Find/usr/lib/rpm/macros% __Check_files /Usr/lib/rpm/check-files %

Powered partly by NVIDIA, Utah University researchers are conducting a study on how to use GPU to accelerate Linux Kernel. The purpose of this study is not only to enable applications (that is, user space) that are used by all users to take

1) Check the current zombie Process Information # Ps-ef | grep defunct | grep-v grep | wc-l 175 # Top | head-2 Top-15:05:54 up 97 days, 4 users, load average: 0.66, 0.45, 0.39 Tasks: 829 total, 1 running, 479 sleeping, 174 stopped, 175 zombie #

$ Sudo apt-get install ruby libopenssl-ruby libyaml-ruby libdl-ruby libiconv-ruby libreadline-ruby irb ri rubygemsInstalling ruby requires poor network speed.You can reinstall the system after installing 1.9. Install the Subversion client: $ sudo