[Linux Learning Notes] 41: CentOS 6.9 (Basic Server) Distribution Network and ssh/rsh Learning

Record the experiment of computer system structure course. To configure Using bridging mode, you can quickly connect to the host ping, but do not check the connection to replicate the host. /etc/sysconfig/network-scripts/ifcfg-eth0 ONBOOT is changed to yes; BOOTPROTO is changed to use static ip, and IPADDR specifies that it ...

Posted on Thu, 20 Dec 2018 03:18:05 -0800 by agret

The process of tossing the hot spots of Realtek rtl8811au hostap WiFi

cause WiFi Internet access is often disturbed by too many hotspots attached to the company, because at present only 2.4G interference is serious and 5G band is not so crowded. To avoid congestion, we decided to build a 5G WiFi hotspot. rtl8811au is an IC that can work in 80211AC mode. System Environment Description My syst ...

Posted on Thu, 20 Dec 2018 00:27:05 -0800 by saf

centos7 L2TP/IPSEC vpn Construction

centos7 L2TP/IPSEC vpn Construction The company's original server was pptp+freeaduis. Later, because the Apple updating system IOS can not access the PPTP mode server, so I studied the L2TP/IPSEC VPN, and found a lot of information and finally succeeded. Record it and keep it for your own reference. centos7 L2TPIPSEC vpn Cons ...

Posted on Wed, 19 Dec 2018 21:00:05 -0800 by mjh513

An Overview of "DAG Edging to Strong Connectivity" Model & Luogu P2746 Campus Network of Schools

Model overview There is a DAG. Ask how many edges can be added to make the graph strongly connected. Title Description Some schools are connected to a computer network. Those schools have made an agreement that each school will distribute software to other schools (called "acceptance schools"). Note that even if B is on the distr ...

Posted on Wed, 19 Dec 2018 19:06:05 -0800 by HiddenS3crets

Avoid Crash integration and simple encapsulation unrecognized selector send to instance crash interception

Some problems about inconsistency between backend return data type and interface document type When a project is mature enough, crash problems rarely arise. Basically, most of the crashes occur in inconsistent data types when docking background data, as well as the problems of array crossover and dictionary null assignment. I' ...

Posted on Tue, 18 Dec 2018 15:06:04 -0800 by utpal

Oracle Case 09 - ORA-12154: TNS: could not resolve the connection identifier specified

DG still handles a lot of problems, but this time encounter a more exotic thing, surface configuration, network is not a problem, but the synchronization of backup always has problems, after many adjustments of parameters, redeployment problems are still the same, and ultimately the mos problem was solved. Now the processing process is recorded ...

Posted on Tue, 18 Dec 2018 13:51:04 -0800 by StateGuy

Python protocol: from yield/send to async/await

Python's threads are not able to perform multi-core parallel computing because of the well-known GIL (of course, with multiprocessing later, multi-process parallelism can be achieved), which is more chicken ribs. Since only one thread can run at the same time under GIL, the switching overhead between threads becomes a drag for CPU-intensive pro ...

Posted on Mon, 17 Dec 2018 09:06:04 -0800 by LMarie

Re-comb Android's message mechanism (and handler's memory leaks) from Handler.post(Runnable r)

Handler Reference: http://blog.csdn.net/iispring/article/details/47180325 Every beginner Android The development of Handler is inseparable from this "Kan". Why is it a Kan? First of all, it is a Kan. androidFramework One of the quintessences is that most people know what they are but don't know why they are. Today, after s ...

Posted on Sun, 16 Dec 2018 21:51:04 -0800 by kgahn

React Native combines Scrollable Tab, RefreshControl and FlatList to implement news categorization list

Just beginning to learn RN, familiar with the control and basic use. Knowledge points involved: 1. fetch network request, get splicing parameters, parse json. 2. Scrollable TabView and Scrollable TabBar Classified Layout. 3. FlatList data list. 4. Navigation routing carries parameter jump. 5. Drop-down refresh, combined with ...

Posted on Sun, 16 Dec 2018 18:33:04 -0800 by dmschenk

Chromium-cipd: golang net/http proxy agent

Recently, using Ubuntu 18.04 LTS desktop version, we downloaded chromium through foreign proxy, which hit many walls. Here we say that one of the cipd update failure errors, home using windows download also recurs: C:\myGit\depot_tools>.cipd_client.exe selfupdate -version git_revision:521b9b64770d3b43a221b1e2bd277687616adac ...

Posted on Sun, 16 Dec 2018 15:12:03 -0800 by InO