Shell

This article mainly introduces the shell script implementation based on SVN Code submission Statistics tool, this article directly gives the implementation of script code, the need for friends can refer to the Nothing recently, I wrote a code

Today, the company colleagues in a server on the other two servers with the computer room for file transfer, the two server files to store the same address, the password and key is consistent (our company in security to do a bit of a pervert), in

Purpose of interprocess communication Data transfer: A process needs to send its data to another process, sending data between a byte and a few megabytes.Shared data: Multiple processes want to manipulate shared data, one process changes to shared

When writing a shell program, you often need to handle command-line arguments, and this article describes the command-line approach under bash.Options and Parameters:Like the following command line: Copy Code code as follows:

One, what is awk awk is a command under Linux, his output of other commands, the processing of the file is very powerful, in fact, he is more like a programming language, he can customize variables, conditional statements, there are loops, there

DNS load balancing is the first implementation of load balancing technology. Configuring the same name for multiple addresses in a DNS configuration file is configured with multiple A records pointing to a different IP, and the client will randomly

Most of the article comes from: http://www.cnblogs.com/zhaoyl/archive/2012/07/07/2580749.html as a note-keeping blog memo.Both exec and source belong to the Bash Internal command (builtins commands), where you can view all the internal command

Crazy DelphidelphiXE7, XE8, XE10 Open Class A group: 58592705 qq:513187410 Zhu Jianqiang bat-Add 7-zip browsing to file right-click menuREG ADD 7-zip Browse function to file right click menuWindows Registry Editor Version

In a structured command, the most basic type is the If-then statement if Commandthen Commandfibash the Shell's if statement executes the IF line definition of the command, and if the exit status code of the command is 0, then the command in the then

The Until loop executes a series of commands until the condition is true. The Until loop and the while loop are just the opposite of the processing mode. The general while loop is better than the until loop, but at some point it is only rare that

Practice Environment:(1) All servers will shut down firewalls and SELinux(2) The root password for all servers is set to AIXOCM(3) All servers are 10.0.100.* network segments and are guaranteed to communicate with other hosts(4) All servers ensure

Linux Shell gets time and time interval (MS level)Note: While performing some performance testing, sometimes we want to calculate the time a program runs, and sometimes it is possible to write a shell script to facilitate some performance test

In writing shell scripts, we often have to deal with some input parameters, it is more convenient to find getopts in the process, and can handle the parameters and parameter values of user input very well.Getopts is used to process user input

#!/bin/sh#date:2015-12-13#filename:fang-dos.sh  #version: v1.0while truedo     #awk ' {print $} ' Access_2015-12-15.log|grep-v "^$" |sort|uniq-c >/tmp/tmp.log    netstat-an|grep est|awk-f ' [:]+ ' { Print $6} ' |sort|uniq-c >/tmp/tmp.log     exec

Recently relatively busy, in the company wrote a Centreon+nagios platform source automatic installation script (because the company can not even outside the network, the company Yum source a lot of things are not all, so can only take the source

1. More friendly display of the currently mounted file system Mount | column-t This command applies to any file system, and column is used to format the output as a list, and the main purpose here is to familiarize you with the usage of

Shell principleIn the operating system, the bottom is the hardware, and the hardware is the kernel (kemel), the kernel is the library, the library is the application, in many applications, there is a shell application, commonly known as the shell,

Debug is more boring, so here first on the conclusions and examples, Debug notes do not look and no confusion.ConclusionUsing the return value in the shell, the only way to be universal is to use a global variable, or use Echo and receive it in the

First of all, the problem arises from the background, because to do stress testing, frequent use of the AB command, need to test a lot of items, each test to do more than 10 times, Test finished also to draw test results curve, and because the

Install the SSH secure Shell under Windows. There are two shortcuts after the default installation.Need to install Openssh-server under LinuxUtuntu installed by default opens is-client, so do not need to install, but if not installed, then use