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Ethereum Series (12): Create secure multi-signature wallets and advanced settings

requires only one account to make these payments, and how many holders (accounts) are allowed to approve withdrawals exceeding the daily limit. Now copy/paste the account address in the text editor before adding, confirm all the settings are correct, click on the "Create" button at the bottom. Then you need to enter a password to send the transaction. In the "Wallet contract" section, a new wallet will appear, telling you to "create". Once the wallet is created, you can see the contract address

Shell functions and arrays

‘/inet/ {print $2}‘Function:#!/bin/baship(){ ifconfig |grep -A1 "$1: " |awk ‘/inet/ {print $2}‘}read -p "please input the eth name: "ethip $ethOperation Result:[[emailprotected] ~]# sh funciton3.shplease input the eth name: eth33192.168.72.130192.168.72.150127.0.0.1192.168.122.1Modified Complete:vim funciton3.sh#!/bin/baship(){ ifconfig |grep -A1 "$eth " |awk

Use HAproxy to separate dynamic and static data

installation is complete, check that all files are generated. [root@haproxy ~]# rpm -ql haproxy/etc/haproxy/etc/haproxy/haproxy.cfg/etc/logrotate.d/haproxy/etc/rc.d/init.d/haproxy/usr/bin/halog/usr/sbin/haproxy 3. Edit the HAproxy main configuration file and add the rules to the backend by proxy. [Root @ haproxy] # vim haproxy. using Global log 127.0.0.1 local2 chroot/var/lib/haproxy pidfile/var/run/haproxy. pid maxconn 5000 maximum number of connections user haproxy service enables the daemo

Memcached common commands and instructions

. delete As you can see, deleting an existing key value and a record that does not exist can return different results.II. read command 1. get The key of the get command can be one or more keys separated by spaces.2. gets As you can see, The gets Command returns a number (13) more than the common get command ). This number can be used to check whether the data has changed. When the data corresponding to the key changes, the multiple returned numbers will also change.3. casCas indicates checked an

. NET Cache Management Framework CacheManager

statistic feature, we are able to track the usage of the cache, which is to print the analysis data in each cache handle separately.foreach (var handle in cache. Cachehandles) { var stats = handle. Stats; Console.WriteLine (String. Format ( "Items: {0}, Hits: {1}, Miss: {2}, Remove: {3}, Clearregion: {4}, Clear: {5}, Adds: {6}, Puts: {7}, Gets: {8}" ,

Command Line to view the memcached running status

It is often necessary to monitor the running status of memcached on the server, such as the number of cache queries and hit rate. ButThe memcached-tool is written in Perl in Linux, and I have never tried whether it can be used in windows. Later, I found a simple way to do this, that is, using telnet. 1. In Windows, connect to the memcached port. In the CMD command line, type telnet 192.168.1.1 11211 11211 as the port number bound to memcached.2. After connecting to the port, enter the

. NET Cache Management Framework CacheManager

. Enablestatistics () 4 . Enableperformancecounters ());After configuring the cached statistic feature, we are able to track the usage of the cache, which is to print the analysis data in each cache handle separately.1 foreach (var handle in cache. Cachehandles) 2 {3 var stats = handle. Stats; 4 Console.WriteLine (string. Format (5 "Items: {0}, Hits: {1}, Miss: {2}, Remo

memcached Instructions for use

when the data is present2. DeleteAs you can see, deleting a key value that already exists and a record that does not exist can return different results.Second, read command 1, getThe key of the GET command can represent one or more keys, separated by a space2, getsAs you can see, the GET command returns a number (medium 13) More than the normal gets command. This number checks to see if the data has changed. When the data corresponding to the key changes, the number returned will also change.3.

memcached Common commands and instructions for use

GET command returns a number (medium 13) More than the normal gets command. This number checks to see if the data has changed. When the data corresponding to the key changes, the number returned will also change.3. CAsCAS is the meaning of checked and set, which can only be stored if the last parameter matches the parameters obtained by the GET, otherwise "EXISTS" is returned.Iii. Status Command 1, stats2. Stats itemsPerform

Malware \ Garbage Rogue common anti-delete batch file _dos/bat

\software\3721] [-hkey_current_user\software\microsoft\internet explorer\explorer BARS\{19CE93DE-8334-42C6-B2CA-BFE3DF5196A3}] [-hkey_current_user\software\microsoft\windows\currentversion\ext\stats\{57421194-58fb-49ae-9b4f-fd48869b9ad4} ] REM MMS through again a super * * has produced REM Find a way to remove%windir%\system32\drivers\albus.sys this evil and unforgivable document, recommend to use Http://ccollomb.free.fr/unlocker [-hkey_local_m

Linux system Monitoring Tools Dstat common usage Summary

1) Tool DescriptionDstat is a tool for replacing Vmstat,iostat Netstat,nfsstat and Ifstat commands, and is an all-purpose system Information statistic tool. Compared with Sysstat, Dstat has a color interface, which is easy to observe when manually observing performance conditions; and Dstat support instant refresh, such as input Dstat 3, which is collected every three seconds, but the latest data will be refreshed every second. As with Sysstat, Dstat can also collect the specified performance re

Example of Haproxy load Balancing cluster architecture design

access log, you can modify the script implementation. #!/bin/bash # Author:koumm # desc: # date:2013-01-31 # version:v1.0 # Modify: # Cut Haproxy Log Mv/var/log/haproxy.log/var/log/haproxy.log.bak if [-e/var/log/haproxy.log.bak]; then Logrotate-f/etc/logrotate.conf chown nobody:nobody/var/log/haproxy.log chmod +x/var/log/haproxy.log fi sleep 1 if [-e/var/log/haproxy.log]; then rm-rf/var/log/haproxy.log.bak fi (3) Haproxy configuration file record Global log 127.0.0.1 local0 maxconn 65535 c

Alex's Hadoop cainiao Tutorial: tutorial 10th Hive getting started, hadoophive

. When you don't know the statements, you can use the mysql statements. Except limit, this will be explained later. hive> show tables;OKh_employeeh_employee2h_employee_exporth_http_access_logshive_employeeworkersTime taken: 0.371 seconds, Fetched: 6 row(s) After the creation, we try to insert several pieces of data. Here we want to tell you that Hive does not support single-sentence insert statements and must be used in batches. Therefore, we do not expect to use statements such as insert into

Basic execution plan statistics

dba_autotask_client where client_name=‘auto optimizer stats collection‘;CLIENT_NAME STATUS--------------------------------------------auto optimizer stats collection ENABLED Collection prohibited dbms_auto_task_admin.disable(client_name=>‘auto optimizer stats collection‘,operation=>NULL,window_name=>NULL); Enable begin dbms_auto_t

How to Intall and configure Haproxy on Centos

https_web192.168.10.10:443mode TCP balance source# Load balancing algorithm Reqadd X-forwarded-proto:\ http Server Server1192.168.10.100:443Weight1Maxconn +Check server Server2192.168.10.101:443Weight1Maxconn +Check # [change HAProxy Stats url]listen Stats192.168.10.10:1936mode HTTP log global balance Roundrobin maxconnTenclitimeout 100s srvtimeout 100s contimeout 100s Timeout queue 100s Stats Enable

Memcached commonly used commands and instructions

exist can return different results. Second, read the command 1, get The key of the GET command can represent one or more keys, separated by a space between the keys 2, gets As you can see, the gets command returns a number more than the normal get command (13 in the figure above). This number checks to see if the data has changed. When the key corresponds to the data change, the more returned number will also change. 3. CAs CAs, meaning checked and set, can be stored only if the la

Memcached commonly used commands and instructions _ server other

. Second, read the command1, get The key of the GET command can represent one or more keys, separated by a space between the keys 2, gets As you can see, the gets command returns a number more than the normal get command (13 in the figure above). This number checks to see if the data has changed. When the key corresponds to the data change, the more returned number will also change. 3. CAs CAs, meaning checked and set, can be stored only if the last parameter matches the parameters obt

Memcached basic knowledge and simple commands

exists and a record that does not exist can return different results. Second, read the command 1. Get The key of the GET command can represent one or more keys, separated by a space 2, gets As you can see, the gets command returns a number more than the normal get command (13 in the image above). This number checks to see if the data has changed. When the data corresponding to the key changes, the number returned will also change. 3. CAs CAS is the meaning of checked and set, which can only be

Linux_haproxy (3) v1.0

Cookies Apart fromBackendCan be inserted into the corresponding message to the userCookies: New InsertCookiesthe nameRewirte: rewrite; back-end server may already haveCookiesRewriteInsert: Insert;Prefix: prefix;Http://cbonte.github.io/haproxy-dconv/1.5/configuration.html#4-cookieExample 1 implementation ofthe session Sticky based on cookie :( session hold )Backend WebsrvsCookie Websrv Insert NoCache IndirectServer SRV1 172.16.100.6:80 weight 2 check rise 1 Fall 2 Maxconn Cookies Srv1Server Srv2

Haproxy Installation Configuration Detailed

-alive10s #默认持久连接超时时间 #timeout http-request 10s #默认http请求超时时间 #timeout queue 1m #默认队列超时时间 balance Roundrobin # Set the default load Balancing mode, polling mode #balance source #设置默认负载均衡方式, similar to Nginx ip_hash #balnace leastconn #设置默认负载均衡方式, minimum number of connections ####### #统计页面配置 ##### ### Listen stats bind 0.0.0.0:1080 #设置Frontend和Backend的组合体, name of the monitor group, customize the name as needed mode HTTP #http的7层模式 option Httplog #采用h

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