Distributed memcached Learning (2) -- Basic memcached commands and basic memcached commands
The above section describes how to compile and log on to memcahed in linux. The following describes how to use the basic memcahed command
Basic MySQL commands and basic mysql commands
SQL
Statement
Mysql version: For mysql-5.6.36 version1.1 Common commands
# View database mysql> show databases; show databases like '% pres %'; # fuzzy query # View table mysql> use xzymysql> show tables; # view permissions show
Learn about basic Linux commands: df commands and du commands-general Linux technology-Linux technology and application information. For more information, see the following. Df command
This interface is used to view the status information of the Linux File System and display the capacity, used, unused, and mount point
Basic linux commands and basic linux commands
Shutdown-h now shut down immediately
Shutdown-r now restart the computer
Reboot now restarts the computer
Logout user logout
Vi editor usage:
1) vi file name
2) Enter I to enter the command mode]
3) Enter esc to Enter command mode]
4) input: [wq indicates exit and keep q! E
=" Image025.png "alt=" Wkiom1l5qzqb2ck-aae02uch_4u103.png "/>(3)hash-d nameDeleteHashNow we will delete the cached pwd in the hash , and the name we need to enter when we delete It is the alias we found with hash-l . 650) this.width=650; "src=" Https://s3.51cto.com/wyfs02/M01/9D/14/wKioL1l5qzuBYp6QAAC5QHVv0zU321.png "style=" float : none; "title=" Image026.png "alt=" Wkiol1l5qzubyp6qaac5qhvv0zu321.png "/>you can see that the PWD is not in the list . then we look at the type of PWD and find that
Mysql build and basic commands, mysql build commands
I. mysql setup process
Install mysql on ubuntu
1. sudo apt-get install mysql-server
2. sudo apt-get install mysql-client
3. sudo apt-get install libmysqlclient-dev
2. Basic commands-Logon, logout, addition of databases,
JSP basic syntax, 3 Compilation commands, 7 Action commands, 9 built-in objectsI. jsp Overview
JSPIs the abbreviation of java server page, which is essentially a simplified servlet and a dynamic web page technical standard. Jsp pages are embedded in java segments in HTML pages. applications developed using jsp can be used across platforms.Ii. jsp
I. Linux basic management commands and Linux management commands
1. Shutdown and restart command
(1) shutdown command: shutdown [Option] Time
Option:-c. Cancel the previous shutdown command.
-H Shutdown
-R restart
Example: shutdown-h now # shut down immediately, root User
+ 10 # shutdown in 10 minutes
# Define the absolute restart time
(2) Other shutdown
Linux entry (1)-Basic commands and linux entry commands
This series of Linux beginners are the basic content I have summarized on the basis of "laruence's Linux private house dish", mainly to record my learning process, but also to facilitate your brief understanding.
Linux Distribution is Ubuntu rather than CentOS rec
Basic Search commands and information in Linux, and query commands in linux
Searching for commands and hardware information is the most common operation for daily system management and maintenance. Next we will make a brief comparison of the Basic Search
MySQL database basic commands (favorites), mysql commands
I sorted out the basic mysql commands and shared them.
# Start, stop, and restart MySql service mysql start | stop | restart/etc/init. d/mysql restart | start | restart # connect to MySQL database mysql-h127.0.0.1-u
Common MySql commands and basic mysql commands
Common MySQL database commands
1. MySQL Common commands
Create database name; create a database
Use databasename; select database
Drop database name directly deletes the database, no reminder
Show tables; displays tables
Descri
Basic but practical: Summary of common LNMP commands and common lnmp commands
1. modify directory permissions[Root @ localhost ~] # Chmod 777/home/user Note: only set the permission of the/home/user directory to rwxrwxrwx.[Root @ localhost ~] # Chmod-R 777/home/user Note: Set the permissions of the entire/home/user directory and its files and subdirectories to rw
Android Sqlite basic commands and androidsqlite commands
To view the database, you must first find the db file. If you copy the file to a computer, you can view it in many ways. on your mobile phone, you can use commands to view it directly and conveniently.
First, you need to find the database location. Generally, t
redirectionStandard input: Code 0, using Standard output: Code 1, using > or >>Standard error Output: Code 2, using 2> or 2>>1>: Output the correct data to the specified file or device in an overriding way1>>: Output the correct data to the specified file or device in an additive way2>: outputting the wrong data to the specified file or device in an overridden manner2>>: The incorrect data is output to the specified file or device in an additive way4. The judgment basis of the command execution
1. Format description"[email protected] Simon" $"[Email protected] ~" $Both of these methods represent the same. Simon is the specified user, localhost is the computer name, if not set to localhost by default. Simon, ~ refers to the directory where you are currently located.Terminal: Command interpreter, simulation shell2, the user's switchsu[options] [user]such as: Su-rootThe example uses the SU command to change a normal user to the root user and use the option "-" to carry the root environmen
Basic Linux commands and Linux commands
Compression and decompression commands
Compression: tar-zcvf appName.tar.gz. date appFileName (for example, tar-zcvf rc.tar.gz. 0513 rc)
Decompress: tar-xvf tarFile
Tar command details:
Tar package compression;-c archive file,-x compressed file,-z gzip co
Basic Linux commands and Linux commands
Cd-> transform path // file usually exists under/var/path, var can be modified storage disk
Ls-> list all properties of hidden and Related Files # ls-al
# Ls-al
-Rwxrwxrwx 1 root 293 2016-02-23 test
File property connection count file owner file user group size time file name
-Rwxrwxrwx 1 root 293 2016-02-23 test
Date-> cu
Basic PostgreSQL commands and PostgreSQL commands
1. Change the table name
Alter table name rename to new table name
2. Change the field name
Alter table name rename field name to new field name
3. Change the field type.
For example, the original type of the ID field is character varying (50) and the new type is integer.
Where, the ID contains numbers such as 1,
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