Shell

1, edit the user's home directory of the. muttrc file, set the letter environment. Copy Code code as follows: # CAT/ROOT/.MUTTRC Set Envelope_from=yes Set from=owinux@sina.cn Set Realname= "Owinux" Set Use_from=yes Set Rfc204

Like other programming languages, the shell supports A for loop. For loops The general format is: Copy Code code as follows: For variable name in list Todo Command1 Command2 ... CommandN Done When the value of

A large number of files are required for testing, so a script is written to copy. A regular file name facilitates reference. Copy Code code as follows: #!/bin/sh # file Name:batchcp.sh # Author:zhouhh #

This paper briefly introduces the method of installing Gearmand and starting under rhel5.7, for everyone to study for reference! First of all, to the official website https://launchpad.net/gearmand/Download Gearmand source package, uploaded to the

Aliyun host one-click Installation lamp,lnmp, automatic installation script, shared by Aliyun host One-click installation package Download address: Click to download 1, Aliyun sharing a key installation Lamp,lnmp, this installation package

Objective In the business development process, often in the background to write some shell script processing data, but it is estimated that many people do not know that the shell script can also support multithreading, and very simple. This article

Shell script: #!/bin/sh # # # Convert file from GB2312 to UTF-8 # path= "$" unset opt if ["$" = "Force"]; Then opt= "-c-s" fi if [-Z "$path"]; Then echo "Nusage: $ n" elif [!-e "$path"]; Then echo "Nerror:destination: $path does not exist.n"

Copy Code code as follows: #!/bin/bash # march-13-2006# Cpuuse Trigger script by Noel## Bash code to watch a running program ' s CPU usage.# if it ' s above a set value, it'll auto send an email.# You'll need to set a Cron job to run this

Access parameters You can visit the command-line argument via PROCESS.ARGV, which is an array containing the following: [Nodebinary, Script, arg0, arg1, ...] That is, the first argument starts with Process.argv[2], and you can iterate through all

The while loop is used to continuously execute a series of commands and to read data from the input file; the command is usually a test condition. The format is:While Commanddo Statement (s) to being executed if command is TruedoneThe command

Open a text editor, create a new file with the extension sh (sh for Shell), and the extension does not affect script execution.Enter some code: #!/bin/bash echo "Hello world!" "#!" is a contract tag that tells the system what

Today, writing scripts, encountering awk script to the shell of the case, the internet Google, found that there are some problems, through the pipeline, through Eval, feeling is very complex. So I thought to try it with read.First, a test file

In the shell we often have to face a problem is how to judge my interactive front-end, the user input is a number it? I'm going to have two ways of doing this here, so just say it here today.The first type: SED formatFirst: Let's start with the

Purpose: Use the Saltstack tool to deploy batch servers and automate the installation (uninstall) of services (such as MySQL).[[email protected] ~]# ll total dosage 304228-rw-r--r--1 root root 311516309 March

File Decompression tarPlease refer to the documentation: HTTP://BLOG.CSDN.NET/EROSWANG/ARTICLE/DETAILS/5555415/tar -zcvf ${standardpath}${filename}. tar. GZ ${filename}File Delete rmRM -r/dirrmfilerm -rf/dir-R,-R,--recursive remove

#!/bin/sh# back Tomcat Catalina. outCD/home/Log_bak #the filedate= ' Date'+%y%m%d-%h%m'' ARCHIVE=$DATE. Tar.gzfile="Tomcat_""$DATE. Catalina.out"#开始备份之前, write the backup information header to the journal file Echo" ">>Log.txtecho" ">>Log.txtecho"———

1. Iterate over each line in the file while read line; Do Echo $line; Done file. txtOrCat file. txt | ( while read line; Do echo $line; done)OrCat file awk ' {print} '2. Iterate over a word for inch $line; Do Echo $word; Done3. WC statistics

1. Introduction to environment variable configuration file　　1.1 Source command:Source configuration file or . configuration fileAfter you modify the configuration file, you must log off and re-login to take effect, using the source command without

the function of the echo command is to display a piece of text on the display, which generally acts as a hint. the general format of the command is: Echo [-n] string where option n means that the output text is not wrapped, the string can be quoted,

A system that encounters a non-Dubbo framework in a project needs to dispatch the tasks of the Dubbo framework system.Tried the expect method, need to install TCL and expect Linux.First Dubbo The official documentation mentions the way Linux calls