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Case statements in the shell:You can match the contents of a variable with multiple templates, and then decide which part of the code should be executed based on a successful matching template. Use format:Case matching Parent board inTemplate 1 [|

Copy Code code as follows: ############################################## #version = "20100718" #author = "Phpsir" #author_email = "Phpsir@phpsir.com" ############################################## Maxnum=50 runmin_max=300 #runmin_max

In general, we use shutdown to implement shutdown and restart.Usage: shutdown [/I |/L |/s |///////[/M \\computer] [/t XXX] [/d [P:]XX:YY [/C ' comment]]]There are no parameters to display Help. This with the type/? is the same/? Display Help. This

If you host your own blog or no web-based application running on the stack, should have a backup system Keeping data stored in MySQL databases safe. There are several solutions that can help for you, and but nothing beats a simple Bash script I

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A buffer is also known as a cache, which is part of the memory space. In other words, a certain amount of storage space is reserved in the memory space, which is used to buffer the input or output data, which is called the buffer space. The buffer

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1. redirect The following a.asm, with the ' t ' and carriage return 13 txt, imitation command.com, according to the MASM command line arg symbol value N, (such as masm/darg=0 A;), redirect 5 dos open Files (std_): N=0: Is stdin handle, first bin

One background 1 signed tinyint using 2 signed tinyint extended two unsigned tinyint design and encoding 1 unsigned tinyint design 2 unsigned tinyint coding three encountered problems 1 the compilation was unsuccessful when compiling the expansion

Case statementcase $变量名 in "值1"） ? 如果变量的值等于值1,则执行程序1 ;; ?"值2"） ? 如果变量的值等于值2,则执行程序2 ;; ? ...省略其他分支... ? *) ? 如果变量的值都不是以上的值,则执行此程序 ;;esac ?//case反过来写"case语句的使用实例"#!/bin/bashread "please input yes /no": chocase "$cho" in "yes") ? ? echo "输入正确！";; ?"no"

1.shell condition judgmentCommand: Test or [Use "[" to End With "]" and a space between judgment statementssuch as: Determine if the demo.c file existsIf [-F DEMO.C]Then...FiOrIf Test–f demo.cThen...Fi1.1 String Comparisonsstring1 = string2 Same as

The role of the shell is to parse the user's instructions and combine the shell instructions with a specific process to form a script.To view the current system Shell version:Once you have written a simple shell script, there are several ways to do

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PHP full source code for user authentication and Management -- Begin auth. inc -- $ Id = "xxxCOM "; If (! Isset ($ PHP_AUTH_USER )){ Header ("WWW-Authenticate: Basic realm =" $ id ""); Header ("HTTP/1.0 401 Unauthorized "); Require ('error. inc ');

Android packaged signature from build keystore to complete signatureFirst of all,we need aKeyStore,of course it's already there .:Cmdunder:Into theJDKof thebinCatalogue,that way., Android.keystoreThe file will be generated in this directory,We need

Technical Analysis of Java deserialization Vulnerability1. Background of Java deserialization Vulnerability In short, serialization refers to the process of converting the object state to a format that can be kept or transmitted (bytestream ). In

Db. func: Function GetRows ($ Database, $ Query ){Mysql_connect ("ftp", "root ","");$ Db = mysql_select_db ($ Database );If (! $ Db ){Echo "cannot connect to the database! ";Exit;} $ Rows = mysql_query ($ Query );If (! $ Rows ){Echo "SQL command

Note that the Iterator is better abstract than the object set, because we can make InfiniteIterators, NoRewindIterators, and so on without having to be consistent with the regular array. Therefore, Iterator lacks functions such as the count ()

This article mainly introduces Python to use the Getpass library to read the password example, small series feel very good, and now share to everyone, but also for everyone to do a reference. Let's take a look at it with a little knitting. There is

This article mainly introduces how to use phpfunction recursion and the difference between return and echo. For more information, see The code is as follows: // Simulate SQL data $ Array = array (0 => 'apple', 1 => 'bana', 2 => 'cat', 3 => 'dog', 4