speech and in Nitsan's blog is incredible-over 100 M ops/sec. It is 10 times faster than JDK's concurrent queue implementation (the performance on 4-Core Intel Core i7 is about 8 M ops/sec ).
With great expectation, I changed the chained blocking queues connected to all actor into lockless SPSC queues. Unfortunately, performance tests on throughput have not significantly improved as I expected. But soon I
MySQL, use the MySQL command to restore the entire library directly. The command format is as follows:
Mysql-u user name-p[password]
The following walkthrough resumes an experiment after a full backup. To restore a single library: If the database is corrupted, delete the database school. [[emailprotected] ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
mysql> drop database school;
Query OK, 1 row affected (0.02
the form and assign the data to the corresponding objects in the Java Mail API, finally, the email is sent.
Sendmail. jsp fileTry {Properties props = new Properties ();Session sendMailSession;Store store;Transport transport;SendMailSession = Session. getInstance (props, null );Props. put ("mail. smtp. host", "smtp.jspinsider.com ");Message newMessage = new MimeMessage (sendMailSession );NewMessage. setFrom (new InternetAddress (request. getParameter ("from ")));NewMessage. setRecipie
usingSystem;usingSystem.Collections;usingSystem.Text;usingSystem.Net;usingSystem.Net.Mail;namespacenetmailsend{classPrograme {/// ///C # sending mail requires the use of namespaces System.Net.Mail///also uses two classes of MailMessage and SmtpClient/// /// Public Static voidMain (string[] args) { //Mail Message//instantiate the MailMessage, call the parameter structure, the sender and the recipient's email address, the sender is not a Gmail mailboxMailMessage
can write this script by yourself. The following is a tutorial:How to write WebMail Notifier scripts.
To make your own script, you should be able to handle javascript and regular expressions.
When the login form of your webmail provider is like this,
The corresponding script is as below.Save below codes as 'mymail. js' (or other name that ends with '. js ')And install it in WebMail Notifier preferences.
Var name = "
You can view the following commands:
# Lsb_release-LSB version: core-3.1-ia32: core-3.1-noarch: graphics-3.1-ia32: graphics-3.1-noarchDistributor ID: centosDescription: centos release 5.4 (final)Release: 5.4Codename: Final
This command applies to all Linux releases, including RedHat, Suse, Debian, and centos.
Root @ mymail ~ # UnameLinuxRoot @ mymail ~ # Uname-R2.6.18-164. EL5[Root @ localhost ~] # Una
following n rowsP/p pasted at the current cursor row or lineTo replace or cancel a command:R replaces the character at which the cursor is locatedR replaces the character at the beginning of the cursor and presses ESC to endU Cancel the previous actionSearch and search Replacement commands:/string search for specified string, ignoring case when searching: Set ICn searches for the next occurrence of the specified string:%s/old/new/g full text Replace specified string: N1,n2s/old/new/g replaces s
How to view distribution information for Linux systems
The code is as follows
Copy Code
#[root@hsnoklox lnmp0.9]# Cat/etc/issueCentOS Release 5.3 (Final)Kernel R on a m# lsb_release-aLSB Version:: Core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarchDistributor Id:centosDescription:centos Release 5.4 (Final)release:5.4Codename:final
This command applies to all Linux, including Redhat, SuSE, Debian and other distributions.
Second, how to view
mail dispatcher using the socket
Summarize
Brief introduction
Mail delivery is often a lot. NET application, especially in the application with network function, one of the indispensable modules, this article introduces the use. NET SMTP class library and two other ways to send mail via CDO (collaboration Data Objects) and sockets.
. NET SMTP class
First, let's introduce. NET class library, with its own SMTP class. Under the System.Web.Mail namespace in. NET, there is a class that specifically
below the line where the cursor is locatedP paste to the top of the line where the cursor is locatedR replaces the character at which the cursor is locatedR replaces the character at the beginning of the cursor, ESC exitsU Cancel the previous action/String to search for the specified string (: Ignore case when set IC searches)N Next (Next):%s/old/new/g full text Replace specified string:%s/old/new/c full text Replace specified string (ask for confirmation): N1,n2s/old/new/g replaces specified s
percentage of time that the disk is busy reading/writing activities.
Avg.Disk Queue Length
The average number of read and write requests (queued in the instance interval for the selected disk)
Current Disk Queue Length
Indicates the number of disk I/O requests that have been suspended. If this value is always higher than 2, it indicates a congestion
Avg.Disk Bytes/transfer
Average number of bytes transferred to or from disk during writ
]
MySQL initial environment settings
[1] set a password for the root user of MySQLWhen MySQL was just installed, its root user was not set a password. First, set the MySQL root password.
[Root @ sample ~] # Mysql-u root login use the root user to log on to the MySQL serverWelcome to the MySQL monitor. Commands end with; or/g.Your MySQL connection id is 2 to server version: 4.1.20Type 'help; 'or'/h' for help. type'/C' to cl
[1] Set the password for the MySQL root userWhen MySQL was just installed, its root user was not set to a password. First, set the MySQL root password.
[Root@sample ~]#Mysql-u Root ← Login to MySQL server with root userWelcome to the MySQL Monitor. Commands End With; or \g.Your MySQL Connection ID is 2 to server version:4.1.20 Type ' help, ' or ' \h ' for help. Type ' \c ' to clear the buffer. mysql>select User,host,password from Mysql.user; ← View
Objective
DDL (data definition Language) Statements: Data definition statements that define different data segments, databases, tables, columns, indexes, and other database objects. The commonly used statement keywords include create, drop, alter and so on.
1. DDL database Operation statement
1) Create a database statement# 创建数据库,数据使用默认编码方式 utf8mb4# create database 数据库名;> create database test; Query OK, 1 row affected (0.04 sec)#
option; This feature is generally not available. In practice, database permissions are best managed centrally by DBAs. Add: You can create a user by creating users or GRANT, which also assigns relevant permissions. The REVOKE is used to remove user rights, and drop users to delete accounts. $ mysql-u Root-pPasswordmysql> CREATE DATABASE test; # Create a databaseQuery OK, 1 row Affected (0.00 sec)mysql> show databases; # See if the database was
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