cyber irb

Today is my first time to contact the Ruby language, according to the tutorial written a very simple Ruby program, the file named Hello.rb, the content is as follows:Puts "hello,ruby!";But the execution is error:After Baidu's solution is as follows: you are still in IRB, so report this mistake, you exit IRB, then execute Ruby hello.rb. I try to exit IRB, but the

private methodsDef grow (heightmultiple, widthmultiple)@ Height = @ height * heightmultiple@ Width = @ width * widthmultipleReturn "New Area:" + area (). to_sEndPublic # define public methods againDef doublesize ()Grow (2, 2)EndEnd As shown below, doublesize can be executed on the object, but any direct call to grow is rejected and an error is returned. IRB (main): 075: 0> rect2 = rectangle. New (3, 4)==#

; keyscan_startStarting the keystroke sniffer…(3) Collect data from the target system. The execution commands are as follows:meterpreter > keyscan_dumpDumping captured keystrokes… From the output information can be seen, the target system has performed a return, entered the number 1, 2 and 34 and so on.7.3.4 Clear TracesWhen an attacker invades the target system, any action that is made may be logged to the target system's log file. In order not to be discovered by the target system, clearing tr

... Installing RDOC documentation for topico-0.0.1 ... To test the use of IRB in IRB: IRB (main):001:0> require ' Topico ' => true irb (main):002:0> Topico.hello Hello, rubygems! => Nil ### #发布到RugyGems网站 Set RubyGems username and password First: $ curl-u username Https://rubygems.org/api/

When I was talking to NS, he showed me a piece of code: Night_stalker wrote See a method shorthand trick IRB Code IRB (main):004:0> "Hello World"-SPL => ["Hello", "World"] IRB (main):005:0> "Hi there Daniel". SP = > ["Hi", "there", "Daniel"] IRB (main):006:0> "Hi there Daniel". S => "ambigous abbreviation s-> Sel

(heightMultiple， widthMultiple) @height = @height * heightMultiple @width = @width * widthMultiple return "New area:" + area().to_s end public #再次定义公共方法 def doubleSize () grow(2，2) end end As shown below, doublesize can be executed on an object, but any direct calls to grow are rejected and an error is returned. irb(main):075:0> rect2=Rectangle.new(3，4) => # irb(main):076:0> rect2.doubleSize() => "New ar

Begin and end are keywords for Ruby, but there is also an instance method with the name begin and end in range. Now the question is: How do you create their alias method? If it doesn't work with class Range;alias begin_x begin end, Ruby thinks the next begin is the beginning of a grammar block: Copy Code code as follows: 2.1.2:089 > class Range;alias begin0 begin End 2.1.2:090?> With class Range;alias begin_x "Begin" End also not, with the alias Begin_x:begin or not!

Tags: other wiki htm linux style height OOB uid requiredFirst, configure the Linux environment, refer to the following two blog posts completed① quickly get started with Ubuntu installation--Install win7,ubuntu16.04 dual systemhttp://blog.csdn.net/qq_28205153/article/details/52203512② Illustrated version: How to configure Win7 + Ubuntu environmenthttps://www.imooc.com/article/12957Next, complete the Ruby installation, and refer to two blog posts to complete① How to quickly and correctly install

others. It may be a powerful fraud weapon According to the "Computer Tools" company warning, in online chat, the "Network lover" software has the ability to imitate human habits and conversations, and netizens who do not know the truth are likely to become the ones, this exposes private information related to credit card accounts. Once such important information is leaked, cyber scammers can use it for email fraud and hackers can use it for identity

Describeyond the gameyou and iwe have met beforeto the magic of the moment in cyber spacedriven by a passion to win playing heart to heartface to facethe challenge of the live time stands before us cannot the gamethrough the portal into cyber spacewe have come to decide our fatewe are here to handle the specified gameat last the moments at handall we need is to believe the canewe will make our stand beyond

subclasses of numeric. Both Fixnum and bignum are subtypes of integers-they define the "General size" integer and the large integer respectively. Figure 1. Ruby's numeric type class inheritance diagram Literal is used to describe instances of these classes. The following code in the interactive Ruby Shell (IRB) shows the literal instance of Float,fixnum and Bignum. Note that a method call can be made on the literal (in this case, the class method

other three-tier devices until it reaches the vro; otherwise, the MAC address will be changed. Discussion and update: Maying asked, "My vro is Cisco 1720 and does not support CEF. What should I do ?" The Cisco 1720 vro can support CEF, but must be a 12.0 (3) or later ip plus version of the software. The 12.2 (11) YV standard IP version of the software can also support CEF. if the current IOS software version of the router is not enough, You need to upgrade it. You can also use the bridge (

VroThe second layerBridgingThe function is actually the ability to process data frames. When the "sub-interface" is enabled on the vro, multiple data frame packages (such as ISL and 802. 1Q) are supported. In this way, we can use a router to connect to a layer 2 device that uses different frames to encapsulate the standard. Cisco routers provide Integrated Routing and Bridging (IRB) functions. When IRB is c

1. msfconsole ? Help Menu Back returned from the current environment The Banner displays an MSF banner. CD switch directory Color Conversion Connect to a host Exit to exit MSF Help Menu Info displays information about one or more modules. IRB enters IRB Script Mode Jobs display and manage jobs Kill to kill a job Load a plug-in Loadpath searches for and loads modules in a path Quit exits MSF Resource Route

exceeds the end of the string, Ruby will not throw an exception, but simply return nil. Assignment:The right side of the value assignment can be any string that can contain both multiple characters and empty characters.IRB (main): 067: 0> S = "hello"=> "Hello"IRB (main): 068: 0> S [-1] = "ABC"=> "ABC"IRB (main): 069: 0> S=> "Hellabc"IRB (main): 070: 0> S [-S. L

The second layer of the router's bridging function is actually the ability to process data frames. When a vro enables a "sub-interface", multiple data frame encapsulation such as ISL and 802. 1Q are supported. In this way, we can use a router to connect to a layer 2 device that uses different frames to encapsulate the standard. Cisco routers provide Integrated Routing and Bridging, IRB) functions. When IRB

1.IRB parameter Configuration~/.irbrcirb.conf[:P Rompt_mode] =: simple #简化 IRB prompt, and disable some annoying auto indent behavior Irb.conf[:auto_indent_mode] = False2. Notes:#单行=begin...... MultiRow=end3. StringString connection>> "JK" + "JK" = "JKJK"string interpolation>> one = "foo" + "foo" >> "#{one} is one" and "Foo is one"String printing>> puts "jk" #打印后自带一个换行符jk = nil>> p "JK" #打印出和原来一样的 "JK" =

yearsscripting language, interpretive, object-oriented, dynamic typeNow that the Ruby version installed on my machine is 2.1, you can use the following command to query:$ ruby-vRuby 2.1.4p265 (2014-10-27 revision 48166) [x86_64-darwin14.0]The specific installation does not do too much introduction, on the official website to consult the relevant information on different platforms, here is a simple exampleIRB (main):001:0> properties = [' good ', ' bad ', ' clever ', ' stupid ']= = ["Good", "ba

ticket.available?FalseEndTrue and False are objects in Ruby, and they can be used to represent true or false in a method. Notice available? Here's a question mark, which calculates true or false, so it's a bit like asking a question when using this method: If ticket.available?Puts "You ' re in luck!"ElsePuts "Sorry--that seat has been sold."EndEvery expression in Ruby gets an object that has a value that is true in almost all Ruby objects, and that object is a true or false one. Only false is

Everything in Ruby is an object. Even a block of code is an Object! In Ruby, a code object is called a block of code. You can imagine a code block as a small program unit. They contain Ruby code and can be transferred to the method when they are executed. A similar concept in python,c and Java is function pointers, anonymous functions, inner classes, and callback functions. The syntax for Ruby code blocks is to place ruby code between curly braces or between do/end commands. As shown below: {