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protected] ' s password:Last Login:tue Apr 15:57:54 2018 from 192.168.106.1[Email protected] ~]#20.29 Expect script remote execution commandAfter automatic telnet, execute the command and exit#!/usr/bin/expectSet user "root"Set passwd "123456"Spawn ssh [email protected]Expect {"Yes/no" {send "yes\r"; Exp_continue}"Password:" {send "$passwd \ r"}}Expect "]"Send "touch/tmp/12.txt\r"Expect "]"Send "echo 1212 >/tmp/12.txt\r"Expect "]*"Send "exit\r"Operat

Problem Solving report -level 2018 2016 the first week of the second semester homeworkD calculation Title DescriptionDescribegiven 4 less than 10 positive integers, you can use subtraction 4 operations and parentheses to concatenate the 4 numbers together to get an expression. The question now is whether there is a way to make the resulting expression equal to 24.Here the subtraction and parentheses are given the same precedence as our usual definitio

20172310 Blue Ink Cloud ASL Test 2018-1938872 Topics: The known linear table has the element {5,13,19,21,37,56,64,75,80,88,92}, what is the ASL if using the binary lookup method? Answer: (Today because go to cheerleading rehearsal, so now finish this blog)First of all, because there is no class, so oneself to understand binary search method In computer science, binary search (English: Half-interval search), also known as binary searching

20165230 2018-2019-1 "Information Security system Design Fundamentals" The second week study summary of learning Contents There are two general rules for arranging the bytes of an object: The small-end method (least significant byte at the front) and the big-endian (the most significant byte in front). The expression x>>k will shift the X arithmetic right to K (the left side complements the K-effective bit) and the x>>>k will make a logical (lef

2018-2019-1 20165230 "Fundamentals of Information Security system design" The third week study summary of learning Contents The actual implementation of the memory system is to combine multiple hardware memory and operating system software. How valid addresses are calculatedImm(Eb,Ei,s) = Imm + R[Eb] + R[Ei]*s ISA: Instruction set architecture, which defines the state of the processor, the format of the instruction, and the effect of

2018 China (Shanghai) International Musical Instrument Fair ended on October 13. As a top event in the industry, the China (Shanghai) International musical Instrument exhibition has attracted more than 130000来 from all over the world to the musical instrument manufacturers, dealers, artists, performers, music teachers and students and the vast number of music enthusiasts to come to the exhibition. An endless stream of consulting at piano Knight Piano

20172322 2018-2019-1 October 19 class test reportProgram: Program design and data structureClass: 1723Name: Zhang HaoStudy No.: 20172322Lab Teacher: Wang Zhiqiang teacherTest Date: October 19, 2018Compulsory/elective: compulsorySupplementary exercises the original questionThe number you want to find is in the initial order of 11,78,10,1,3,2,4,21Problems with homework submitted in class The binary Lookup section of the ASL is calculated incorr

-2018-2019-1 20165206 "Information Security system Design Fundamentals" 4th Week Study summary-Textbook learning content Summary Programmer-Visible state: Each instruction in the Y86-64 program reads or modifies portions of the processor state, which is known as the programmer's visible state. Includes: program register, condition code, program status, program counter, and memory. Y86-64 directive: The y86-64 instruction is a subset of th

2018-2019-1 "Information Security system design basics" x-week study summary of learning ContentsSummarize what you learned this week as simple as possible.Try not to transcription, waste timeRead it, do not understand, learn to remember the experienceProblems in teaching materials learning and the solving process(a template: I read this paragraph of text (quoted text), there is this problem (ask questions). I checked the information, there are these

-2018-2019-1 20165206 "Information Security system Design Fundamentals" 3rd week Study summary-Textbook learning content Summary Program code: The GCC command invokes a complete set of programs to convert the source code into an executable file.First, the C preprocessor expands the source code;Second, the compiler produces the source file assembly code;The assembler then converts the assembly code into a binary target code file;Finally, the l

2018-2019-1 20189221 Book fast reading 1th Week "in-depth understanding of computer systems" The 1th chapter:How to understand Amdahl law? The 2nd Chapter:How do you get code to run on a machine of any word length, and how to port code between different machines? The 3rd chapter:How do C + + and Java compilers map to generate machine-level programs? The 4th chapter:How does a pipelined processor perform basic exception ha

2018-2019-1 20165336 "Information Security System Design Basics" week 5th Study Summary 1. learned knowledge points SRAM and DRAM are both easy to lose, but they have different structures, different speeds, and faster access speed. The prom can only be programmed once. Programs stored in ROM devices are usually called firmware. The EEPROM can erase the information on the chip with a specific voltage without ultraviolet radiation or re

20172324 2018-2019-1 "program design and data structure" Fourth Week study summaryCollection of summary list of learning contents of textbooks List Description Ordered list Its elements are sorted according to some intrinsic characteristics of the element Unordered list The elements do not have an intrinsic order, and the elements are sorted according to their position in the list (d

20172313 2018-2019-1 "program design and data Structure" the fourth week study summary textbook study summary List Collection Ordered list: its elements are sorted by an intrinsic characteristic of the element. (an element in a sequence table has an intrinsic association that defines the order of elements) unordered list: The elements do not have an intrinsic order between them, and the elements are sorted by their position i

20172327 2018-2019-1 "program design and data structure" Fifth week study summary textbook Study content summary nineth Chapter sort and find Find 1. Find: Find the specified element in a project group or determine whether it exists. The project group is called a lookup pool.2. Common Find method, linear find.3. Find the goal: efficiently complete the search, with minimal comparison operations. Finding the number of items in

20172333 2018-2019-1 "program design and data structure" Fourth week study summary textbook Learning content summary 6.1 list collection The list collection has no intrinsic capacity size and grows as needed List collections can add and remove elements at the middle and end, except that queues and stacks can only be added and deleted at the end. List collections are divided into three categories: ordered, unordered, indexed There

2018-10-13 21:30:51 C languageBinary, octal, and 16-in: 1) Integral partsDecimal integers are converted to n-ary integers using the "n-remainder, reverse-order" method.Decimal number 36926 converted to octal?1100762) Number of decimal partsDecimal decimals are converted into n decimal fractions using the "multiply N rounding, ordered" method.Decimal decimal 0.930908203125 converted to octal decimals?0.7345If a number contains both an integer part and

2018-2019-1 20165228 "The foundation of Information security system Design" experimental report on Buffer Overflow Vulnerability Experiment Introduction:Buffer overflow attack: by writing to the program's buffer beyond its length content, causing buffer overflow, thereby destroying the program's stack, causing the program to crash or to make the program to execute other instructions to achieve the purpose of the attack.Experimental principle:In genera

20172327 2018-2019-1 "program design and data structure" Fourth week study summary textbook study contents summary sixth chapter list List Collection 1. Linked lists and list comparisons: Linked lists are an implementation strategy that uses references to create links between objects. A list collection is a conceptual representation that lists can be implemented by linked lists and arrays.2. Stacks and queues are linear stru

20172307 2018-2019-1 "program design and data Structure" The 4th Week Study summary Textbook study summary Queue1. The elements of the queue are processed in a FIFO manner.2. A queue is a convenient collection of reusable encoding keys that can be stored.3. Queues are typically used to implement a queued simulation.4. Point to the first element of the list, two references to the last element of the list, which facilitates the implementation o