offset | 易学教程

用汇编编写病毒

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用汇编编写一个病毒在github上看到大神用汇编编写的linux病毒，学习一下 github地址： https://github.com/cranklin/cranky-data-virus/blob/master/cranky_data_virus.asm 源码分析： ;; nasm -f elf -F dwarf -g cranky_data_virus.asm ;; ld -m elf_i386 -e v_start -o cranky_data_virus cranky_data_virus.o section .text global v_start ；代码开始处 v_start: ; virus body start ; make space in the stack for some uninitialized variables to avoid a .bss section mov ecx, 2328 ; set counter to 2328 (x4 = 9312 bytes). filename (esp), buffer (esp+32), targets (esp+1056), targetfile (esp+2080) ；不断向栈上push 0，用作全局未初始化变量空间，依次push是4个字节loop_bss: push 0x00 ; reserve

Change top offset margin for SnapPoint JQuery plugin with Fixed menu

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问题 I am using the SnapPoint plugin from https://github.com/robspangler/jquery-snappoint and it works well. But i have a fixed menu container of 120px on the top so everytime the slide snaps to the top, it gets hidden behind the menu. On the authors website, he mentioned a while ago that to overcome this issue padding-top: could be used, but my design does not allow using the padding-top solution. Is there another non-css way to hardcode the offset via JQuery to 120px when it snaps ? Thanks in

Undefined offset notice in loop

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问题 I'm using a script to create additional form rows. It loops the $i number for certain text fields When I run this script, the offset is undefined because it doesn't exsist. I need to use the if(isset()) function, but I am unsure how I would place it in the code. Can anyone help? for ($i=0; $i<100; $i++) { if ($text['length'][$i] == "") $text['length'][$i] = "0"; if ($text['bredth'][$i] == "") $text['bredth'][$i] = "0"; if ($text['height'][$i] == "") $text['height'][$i] = "0"; if ($text[

Is there such thing as a VLOOKUP that recognises repeated numbers?

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问题 I have a list of values in column A on an excel TAB and on the column B next to it I have a list of words. On another TAB, I'm trying to retrieve the words from B where A has the smallest value, then the 2nd smaller value, 3rd, etc. Example: Column A would have (2,3,3,6,8) and B (car,dog,cat,house,boat) I firstly created a column where I retrieved the smallest values: On column X1 I added: SMALL('Table'!$A:$A,1) On column X2 I added: SMALL('Table'!$A:$A,2) etc... and then a VLOOKUP worked for

How to get the offset of a partition with a bash script?

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问题 I can use parted to find out the offset of my image. sudo parted -s image.img unit B print Model: (file) Disk /home/user/image.img: 107374182400B Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 2097152B 107374182399B 107372085248B primary ext4 For example, partition starts at 2097152 . How can I get the 2097152 with a bash script? I could probably parse the output, but perhaps there is a more suited method? 回答1: One option, feed

How to get the parent element in an HTML string at a given offset?

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问题 New Question I am looking for a way in Javascript to get the parent element of a given position in an HTML string (e.g. document.innerHTML or document.body.innerHTML). Simple example: <p>I really <em>like <a href="...">stackoverflow</a></em> a lot.</p> ^...........^ Offset 35 to 48 Given offset 35 (to 48), the function should return the node object of the "a" element. I am wondering whether this is possible at all and, if it is, what would be a good approach to solve this. Thanks in advance

How to get the parent element in an HTML string at a given offset?

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Change matplotlib offset notation from scientific to plain

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问题 I want to set the formatting of the y-axis offset in my plot to non-scientific notation, but I can't find a setting to do this. Other questions and their solutions describe how to either remove the offset altogether, or set the y-ticks to scientific/plain notation; I haven't found an answer for setting the notation of the offset itself. I've already tried using these two options, but I think they're meant for the y-ticks, not the offsets: ax.ticklabel_format(axis='y', style='plain', useOffset

Kafka主要参数详解

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一、相关参数配置 ############################ System ############################# #唯一标识在集群中的ID，要求是正数。 broker.id=0 #服务端口，默认9092 port=9092 #监听地址，不设为所有地址 host.name=debugo01 # 处理网络请求的最大线程数 num.network.threads=2 # 处理磁盘I/O的线程数 num.io.threads=8 # 一些后台线程数 background.threads = 4 # 等待IO线程处理的请求队列最大数 queued.max.requests = 500 # socket的发送缓冲区（SO_SNDBUF） socket.send.buffer.bytes=1048576 # socket的接收缓冲区 (SO_RCVBUF) socket.receive.buffer.bytes=1048576 # socket请求的最大字节数。为了防止内存溢出，message.max.bytes必然要小于 socket.request.max.bytes = 104857600 ############################# Topic ############################# # 每个topic的分区个数

mysql - offset problem

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问题 I recently posted a question about getting last 3 results in table in the correct order. I now want the get all comments apart from the last 3 in the correct order. Here is my syntax; SELECT * FROM (SELECT * FROM $table ORDER BY ID DESC OFFSET 3) AS T ORDER BY TIME_STAMP The error I am receiving is: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'OFFSET, 3) AS T ORDER BY TIME_STAMP' at line 1 I can't seem