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  FreeSWITCH twists and turns notes 1--SIP relay docking

  For the successful configuration of freeswitch docking with various devices, please refer to it if you need it, and guide you if there are any errors. 1. Docking Huawei softco relay configuration\ sip_profiles\ external\ dialing rules out

  2022-06-01 03:14:29 Views: 286
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  Random- generates random number module

  Import randomrandom.random () / generate random numbers between 0 and 1 random.randint (1) / / generate integers between 1 and 5, including 1 and 5, in the range: [1-5] random.ran

  2022-06-01 03:14:26 Views: 258
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  Detailed explanation of tcpdump grab package

  Preparation: the environment adopted this time is centos6.5 default Linux does not install tcpdump we need to install 1) yum install tcpdump-y2) if we forget the use of this software, we can use tcpdump

  2022-06-01 03:14:18 Views: 280
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  Advanced poll Omuri-multiplexing

  Slightly improved multiplexing-pollpoll is a slightly improved multiplexing version of select, which is soon replaced by the full-featured epoll. It differs from select in that the return of select is returned through input parameters, so it is added every time.

  2022-06-01 03:14:17 Views: 283
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  Fragmentation and Assembly of IP Datagram

  The format of IP Datagram the header length and data length of IP Datagram are variable length, but it is always an integer multiple of 4 bytes. (1) for IPv4, the 4-bit version field is 4. (2) the value of the 4-bit head length is in 4 bytes, and the minimum value is 5, that is to say, the head length is the most.

  2022-06-01 03:14:15 Views: 235
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  Web front-end interview guide (4): prepare for the interview-be prepared to win a hundred battles

  Step 4.1 learn about the company, prepare three questions to ask each other questions about the company's product introduction ü profit model ü development direction 4.2 Project preparation and technical points that may be asked review ü box model ü asynchronous processing ü cross-domain request ü JSON format 4.3 prepare several possible

  2022-06-01 03:14:15 Views: 277
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  Juniper Firewall lost ScreenOS reinstall ScreenOS

  Juniper Firewall lost ScreenOSJuniper Firewall is a hardware firewall, there are hardware systems and software systems, that is, ScreenOS, the hardware will break down and the software will break down naturally. In practical use, I have encountered many times of Juniper prevention.

  2022-06-01 03:14:13 Views: 238
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  Crypto encryption of nodeJS

  The encryption module provides a way to encapsulate security credentials during HTTP or HTTPS connections. OpenSSL hash, hmac, encryption (cipher), decryption (decipher), signature (sign) and verification (v) are also provided

  2022-06-01 03:14:13 Views: 208
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  47. MED routing for BGP configuration experiment

  1. As-path routing resolution attribute propagation range default value priority direction remarks weight this router 32768, other router 0 large value priority INCISCO private Local preferenceAS internal 100th: border router, advertisement

  2022-06-01 03:14:02 Views: 210
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  Debugging of SPI Communication on encryption Chip

  SPI is the abbreviation of Serial Peripheral Interface (Serial Peripheral Interface). It is a synchronous serial interface technology developed by Motorola Company. It is a high-speed, full-duplex, synchronous communication bus. The communication principle of SPI is very simple, it

  2022-06-01 03:14:02 Views: 297
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  Alibaba released the 2015 data risk Control Annual report, an analysis of the black industry chain of Internet business.

  To download the full version of PDF "2015 data risk Control Annual report", please click here-Chapter 1 data risk Control Review 2015 20

  2022-06-01 03:13:57 Views: 240
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  What is shell scripting?

  What is an example of a Shell script: #! / bin/shcd~mkdirshell_tutcdshell_tutfor ((iBoth _ I < 10 _ x _ iscript +); the dotouchtest_$i.txtdone example explains line 1:

  2022-06-01 03:13:54 Views: 241
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  Small stature and big use, use PrimusUI to control your page

  "PrimusUI" is a simple code collection that draws lessons from many open source UI libraries on the Internet, and then collates and processes itself. The CSS code of each functional block is very little, so it is easy to understand and has a low threshold. The code can be easily modified according to its own actual situation and changed to suit its own scene.

  2022-06-01 03:13:52 Views: 300
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  Special object reference $this

  name. "; gender:". $this-

  2022-06-01 03:13:50 Views: 292
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  Aix command: lists processes that use memory and the first few bits of Cpu

  (1) display the 10 processes that consume the most cpu # ps aux | head-1; ps aux | sort-rn + 2 | head-10 (2) display the 10 processes consuming the most memory # ps vx | head-1

  2022-06-01 03:13:49 Views: 274
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  ASA failover application

  Failover conditions: 1, hardware model must be the same 2, system version must be consistent 3, mode must be consistent 4, same license and number of licenses step: step 1: configure failover interface to ensure status upLZ-CNC-UT

  2022-06-01 03:13:45 Views: 201
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  A kubernetes directly connected route OSPF equal cost route

  It has never been written. Through some insights I have learned by myself, I have recorded it. It is expected that the children who study together will work together to maintain the growth of the straight-stamped topic kubernetes. The concept of service is put forward in the network, and the implementation principle is called by the proxy process on the node node.

  2022-06-01 03:13:44 Views: 251
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  Echo command

  The echo command between single quotation mark and double quotation mark between string and variable "weak reference, command does not recognize, variable recognition." strong quotation, silly symbol, what command is a string in his eyes. Command does not recognize, variable does not recognize. ~ command quote, the cleverest

  2022-06-01 03:13:44 Views: 249
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  Dynamic domain name security SSH to prevent malicious login

  First, go to peanut shells or other dynamic domain names to apply for a free domain name. 1. Write the rules on the server first to prevent SSH-An INPUT DROP-An INPUT-p tcp-- dport 80-j ACCEPT-A from being connected directly.

  2022-06-01 03:13:44 Views: 236
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  Backup of computer files

  In a twinkling of an eye, it's the end of the month, and I'm going to start writing a summary of my work again. In fact, it's not a big deal, but a sudden power outage in the company 'broke' all my files, and it was too late to back up. Of course, I was not the only one who suffered, but a colleague fortunately dodged the bullet, mainly because he used documents.

  2022-06-01 03:13:37 Views: 224