Frequently-used commands echo, @, call, pause, and REM (TIPS: Use: instead of REM) are the most frequently-used commands for batch file processing. We started from them.
First, @ is not a command, but a special identifier for DOS batch processing.
One, echo command (Echo graphic version)
1. Echo: Displays the status of the current echo: echo on or echo off.
2. The ECHO On:echo state is set to on, and displays the command line (such as the c:\> before each row, and similar flags).
3. The ECHO
How to batch upload a single file in one sentence based on kitchen knife PHP?
0 × 00 Preface
Many times, when we crawl a lot of webshells in batches through a common RCE vulnerability, we may want to batch upload backdoors for future use. At this
How can I use php to output the corresponding records in the excel file into a single sentence Array ([content] => Doctor [record] => Hello, here, you can make an appointment with Professor Zheng farei of Peking Union Medical College Hospital. you
Use preg_replace dangerous e modifiers with caution (a single-sentence backdoor is commonly used ). Preg_replace function prototype: mixedpreg_replace (mixedpattern, mixedreplacement, mixedsubject [, intlimit]) Special note: e modifier enables
1. Simple syntax rules (use curly braces to define variable names for all versions of PHP):
Copy CodeThe code is as follows:
$a = ' flower ';
echo "She received some $as";//invalid; the letter S will be considered as a valid variable name, but the
1. Simple syntax rules (use curly braces to define variable names for all versions of PHP):=' flower ';" She received some $as "; The letter S will be considered as a valid variable name, but here the variable is $ A"She received some ${a}s";
Eval function introduction and PHP one-sentence Trojan analysis Hello everyone, I am Carol, and my QQ is: 906871417 I: eval function 1. eval () function calculates the string according to PHP code. 2. the string must be a valid PHP code and must end
The PHP code is as follows:
echo "ISBN: ". $isbn."Title: ". $name."Author: ". $author."";
The data is obtained from the database and then assigned to $ISBN.
Garbled display
Add code:
echo "
";
After:
How to solve Ah??
Reply to
First, let's review the typical Trojan horse in the previous ASP sentence!
"" then execute request ("nonamed") %>
In vbs, execute is used to dynamically run the specified code, and the eval function can also be used in JScript. That is to say,
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