Linux

1. The traditional fork () functionCreate a child process, child process and parent process share body segment, copy data segment, heap, stack to child processAs follows:2.Linux fork () function-copy-on-write (Copy-on-write)Create a child process,

In the Linux operating system, each file has a lot of time parameters, of which three are compared to the main, respectively, Ctime,atime,mtimeAtime last access time, such as LS, more etc, but chmod, chown, LS, stat, etc. will not be modified for

#CVE #Description #Kernels cve-2017-1000367 [sudo] (sudo 1.8.6p7-1.8.20) cve-2017-7494 [Samba Remote execution] (Samba 3.5.0-4.6.4/4.5.10/4.4.14) cve-2016-5195 [Dirty Cow] (Linux kernel>2.6.22 (released in)) cve-2016-0728 [Pp_key] ( 3.8.0, 3.8.1, 3.8

1. RoleCopy a file or directory, create a linked file (i.e. a shortcut), and update it against the new and old two file.2. UsageCP "Parameters" "source file" "Destination file"Parameters:-A: equivalent to-PDR;-B: The target file is backed up before

Some novice friends after getting a webshell, if you see the server is Linux or UNIX operating system directly give up right, think that Linux or Unix power is difficult, not everyone can do, in fact, the power under Linux is not as difficult as

#include #include #include #include # Include #include #include #include #include static bool stop = false;static void handle_term (int sig)//Kill PID; In another TTY would triggle this signal{stop = true; printf ("Signal SIGTERM catched...

One, Usermod command 1. Usermod changing a user's properties Usermod-u 111 User1 Change the UID of user User1 to 111 Usermod-g grp2 user2 Change user2 Group to User2 usermod-d/home/test User3 Change User3 's home directory

Unlike sending network packets, network packets are asynchronous. Because you are not sure who will suddenly send you a network package. So this network packet logic actually consists of two things: 1. Notification after the arrival of the packet2.

A total of 2 servers, respectively, a, B. A dual network card, that is, there is an intranet network. B only intranet environment. A, B's intranet is built through a switch. As for the external network how to build I will not say. The key is to say

The following is from: Amin http://www.apelearn.com/study_v2/chapter11.html, the commonly used to write, the feeling can be; Just compress and unzip the tool: Gzip Tool:Just remember these parameters when you use them: NOTE: gzip cannot compress the

Transferred from: http://blog.csdn.net/skdkjzz/article/details/38927943We know that in the process of scanning the card, the host is identified in the order of Sdio SD MMC, and it is important to note that this order is in its annotations. In this

1. What is SELinuxSELinux, kernel-level enhanced firewallElinux provides a flexible, mandatory access control (MAC) system embedded in the Linux kernel. SELinux defines the access and transformation permissions for each user, process, application,

Sublime text is a code editor, and I use it primarily to edit Python. Here is a simple description of the Linux installation process it!1. Add a sublime Text3 warehouseFirst press the shortcut key ctrl+alt+t open the terminal;In terminal input:sudo

First, & is most often usedThis is used at the end of a command, you can put this command in the background to executeTwo, CTRL + ZYou can put a command that is executing in the foreground in the background and pauseThird, JobsSee how many commands

The following are from: http://blog.csdn.net/clozxy/article/details/5299054 Http://linux.chinaunix.net/techdoc/system/2007/06/17/960372.shtml http://tutu.spaces.eepw.com.cn/articles/article/item/70737 UmountFunction: In contrast to the function of

Questions Guide:1. How do I connect remotely? 2. How do I upload a file? 3. How to operate on the opposite file? 4. Under what circumstances will the link fail? Https://yunpan.cn/cYWtNMycjeVPv access password 4f74linux often need to edit the file,

Solution to prompt insufficient permissions for linux echo commands, and insufficient echo Permissions This article is reproduced here: http://blog.csdn.net/u010780613/article/details/51491237 Problem description: When using the Ubuntu system, I

Detailed explanation of linux sed commands and sed commandsIntroduction Sed is an online editor that processes a row of content at a time. During processing, the currently processed rows are stored in the temporary buffer, called the pattern space.

Entry to transcription groups (1): software installation and entry to transcriptionHISAT Wget ftp://ftp.ccb.jhu.edu/pub/infphilo/hisat2/downloads/hisat2-2.1.0-source.zipUnzip hisat2-2.1.0-source.zipCd hisat2-2.1.0Make # install g ++ and gcc before

Linux Remote logon using public key and public remote Logon I. Preface:There are three methods for ssh remote logon password Authentication: password Authentication, Keyboard Interactive, and Public Key. The third is the most secure login method.