Linux

The Fastbin under Linux is the key point of the PWN problem in CTF. Last year (2015), XCTF two stations are using Fastbin as the pwn400 of the use of the axis of the problem to appear, which is also my first contact with the use of Fastbin,

Everyone knows that the touch command is used to create a new empty file in daily operations, but there is an important role to tell you today is to change the file date.Generally we are mainly used to modify the file date to the current

1. Copy the/etc/rc.d/rc.sysinit file to the/tmp directory and add # to the beginning of the line with at least one whitespace character in the/tmp/rc.sysinit file;[Email protected] tmp]# cp/etc/rc.d/rc.sysinit. [[email protected] tmp]# vim

1. Copy the/etc/rc.d/rc.sysinit file to the/tmp directory and add # to the beginning of the line with at least one whitespace character in the/tmp/rc.sysinit file;Last-line mode in VIM:Built-in command-line interface(1) Address delimitation:

First,Linux five restart command　　1, shutdown　　2, Poweroff　　3. Init　　4, reboot　　5, haltIi. Specific instructions for five restart commandsShutdownRebootIn Linux, some common shutdown/restart commands have shutdown, halt, reboot, and INIT, they can

Later development is to use Linux, so installed Ubuntu, is also the first time with the Linux system. The win7+ubuntu16.04 dual system is installed.The installation process is as follows: I use a USB stick installation, see http://www.jianshu.com/p/2

First, modify the host file1) Connect to the Linux server with the client tool (SSH client or putty). Enter the command under root userVi/etc/hosts, edit the Hosts file with VI as follows:#127.0.0.1 localhost localhost.localdomain localhost4

1. Copy the/etc/rc.d/rc.sysinit file to the/tmp directory and add # to the beginning of the line with at least one whitespace character in the/tmp/rc.sysinit file;cp/etc/rc.d/rc.sysinit/tmp sed ' [email protected]^[[:space:]]\[email protected]\#&@ '/

Linux basic commandsEditor vimCompiler GNU Tool chain-GCCDebugger GDBThe operating system is written in C. system programming (core skeleton 80%) file I/o file system process {Process Control primitives, interprocess

One1) Blue : Indicates optimized XFSParameters at MountDefaults,noatime,nodiratime,nobarrier,discard,allocsize=256m,logbufs=8,attr2,logbsize=256k2) Gray : Indicates the default XFSParameters at MountDefaults,noatime,nodiratime,nobarrier3) Yellow :

1) directory Structure and role/bin stores the command directory for Linux general users/boot stores some of the core files used when starting Linux, including some connection files and image files/dev stores Linux external devices, accesses devices

1.Unix and Linux HistoryIn 1965, the Massachusetts Institute of Technology, GE and Bell Labs jointly developed the Multics project, with the goal of developing an interactive time-sharing operating system with multi-program grooming capabilities,

In the Linux operating system, when we use the character interface to operate, we often inadvertently encounter the root user can not log on the situation. Generally for beginners, to see this happen, is to kill, a lot of people at this time began

This article was reproduced from: http://blog.csdn.net/dlutbrucezhang/article/details/9058583Each process in a multitasking operating system runs in a memory sandbox that belongs to its own. This sandbox is the virtual address space, which is always

Recently in the study of video-related technology, learned ffmpeg, on the internet to see how to transplant FFmpeg to Android, looked for a few days, look at a lot of things, is not a complete transplant successful, and finally through the

The thread shares the memory space of the process, opens the file descriptor, and the global variable. When there are multiple threads colleagues accessing a piece of memory space or a variable, a file descriptor, if not controlled, then there may

My operating system is centos6.51 First choose what database Django will use. django1.10 default database is Sqlite3, I want to use MySQL database, but in order to test convenient by the way to install the SQLite development package.Yum install

Archlinux backup and archlinux backup Ah, uqi is not a great god. What you know is fur. It is not ugly. Only for record effect.   Tar backup arch: Create an exclude list to exclude files that do not need to be backed up. Example: #vi

How to Use crontab in linux and crontab in linuxMinute hour day month dayofweek commandMinute-Integer from 0 to 59Hour-Integer from 0 to 23Day-Integer from 1 to 31 (must be the valid date of the specified month)Month-An integer from 1 to 12 (or a

Starting from a Linux grep command, linuxgrep During Development today, I saw my colleagues using such a linux Command. grep 'class YourClass' -rwi * |grep -v svn   Think of the grep command, several parameters. 　　 -R explicitly requires that you