Shell

1. DemandThe collection task constructs the storage. To achieve the title, time, content and other information of more than 200 Web site collection information configuration, and inserted in MySQL.2, Implementation Step 1: Manual implementation of

First, log in to Git and create a new repositorySecond, in the "Repository name" column to fill in the name of the version of the warehouse, such as "test", description column is a description, can be filled.The default access is public, click the

Text viewing and processing tools: WC, cut, Sort, Uniq, diff, PatchWc:word CountWC [OPTION] ... [FILE] ...-l:lines-w:words-c:bytesCutCut OPTION ... [FILE] ...OPTION:-D CHAR: Delimiter with the specified character;-F Fields: the selected field;#: The

Conditional judgment, control structure:Single Branch if statementif judgment condition; ThenStatement1Statement2...FiTwo-branch if statement:if judgment condition; ThenStatement1Statement2...ElseStatement3Statement4...FiMulti-Branched if

Reference:Http://www.cnblogs.com/tuzkee/p/3755230.htmlhttps://segmentfault.com/q/1010000000156870Http://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-scriptAvoid using which, which can be implemented with the following

Shell script Programming 1. Basic concepts In the shell # as a comment, using exactly the same method as in C // The shell can be ; executed by executing two commands in the same line, such asls ; pwd The script is executed

Test 101-le 99101 is less than or equal to 99Similar special symbols are also available.-eq "Judgment is equal"-ge "judgment is greater than or equal to"-lt "judgment is less than"-ne "judgment is not equal to"You can use the command "[]" instead of

#!/bin/bash##!/bin/bash#read-p ' input ' c #指定抽取的学生人数jw = (' Wang Hao ' ' Shei Yunsheng ' ke Yang ' He Shingyu ' Repeti ' ' Dengbellin

SSH (Secure Shell) is a set of remote operation of Linux and file upload and download software,Very useful, almost all Linux programmers in a software company will use SSH.Preparatory work:: Http://files.cnblogs.com/hongten/SSHSecureShellClient-3.2.9

1, read from file whileRead Line Do Echo "line= $line" Donefile. txt2, converts a string to an array, and iterates through STR="html, CSS, JavaScript, java, PHP, go, python"arr= (${str//,/ }) forIteminch${arr[@]} Do Echo "item= $item" Done3,

Brief summary: Single quotes:What you can say is what you see is what you get: the contents of a single quotation mark are output as-is, or what you see in single quotes is what you output. double quotes:The contents of the double quotation

First, what is the bean Shell BeanShell is a scripting language that conforms fully to the Java syntax specification and has its own syntax and methods. BeanShell is a loosely typed scripting language (this is similar to JS);

1.psReview the process. It only shows the processes that are currently user-owned under the current console, including bash and PS commands themselves.2.topReal-time detection process. The first line of the output shows an overview of the system

View FilesStat can list all information about the target fileStat com_id.txt File: ' com_id.txt ' size:22 blocks:8 IO block:4096 Regular filedevice:fd00h/ 64768d inode:5056098 links:1access: (0644/-rw-r--r--) Uid: (0/root) Gid: (0/root) access:2016-

First, the basic writing process of the practice script:1. Determine the task and the command to complete the task2. Scripting Integration Tasks3. Authorization and test executionSecond, exercise:A. First I create a directory, put the script we

When using some basic shell commands, the machine needs to interact with the person to determine the execution of the command. such as CP Test.txt Boo/test.txt, will ask whether to overwrite? SSH remote login, you need to enter a manual password

the speed of software development exceeds that of any one industry. Software practitioners have climbed, and software users have gone deep into the countryside (using smartphones to watch programs and chat videos). 1 Linux and Shellas a user of

Personnel pay before the payroll is sent to our mailbox, look at the personnel sister paper is a kind and beautiful gu cool, so wrote a shell code to achieve bulk text to each mobile phone number. Not much to say, on the code, in fact, very simple,

JMeter parametric section refer to previous articleShell parameter Description: Number of threads, $: Total concurrency Rampup time, $ $: script run time, $4: Each script cycle duration $: So the cycle duration#!/bin/bashReport_time= ' Date '

DNS Cluster ( multiple servers synchronize one primary DNS information, easing the pressure on the primary DNS )Configure the secondary DNF server (so that it can synchronize primary DNS, sharing the pressure of the primary DNS :)Modifying a