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2_linux_ file and permission handling commands

digital marker.?3.2 Permission Handling commands1) chmodchmod u rG Wo Xchmod u+wx chmod o-rx chmod g=rwx?Note: RWX does not have the same meaning for files and directoriesExample: To delete a file, instead of having W permission on a file, you should have W permission on the directory where the file resides.2) Chown must have root authorityChown Game:game/etc/serviceUseradd gaominpasswd gaomin3) UmaskRun Umask00220 Special Permission Bits022 user rights bit, permission mask value777-022=755/***

HTML Pop-Up dialog box function Daquan

toolbarWIDTH=50: WidthHEIGHT=50: HeightScrollbars=yes/no: Scroll barTOP=50: Window from top of screenLEFT=50: Window from the left side of the screenExample: window.open (' detail.aspx?id= ' +e.item.cells[1]. text+ "', ' newwin ', ' width=750,height=600,scrollbars=yes,top=50,left=50 ');");This. Response.Write (" "); [/quote] Example:This. Response.Write (" ");This. Response.Write ("");Example: Linkcolumn1. datanavigateurlformatstring= "Javascript:var

ExtJS4.2 grid Knowledge Point five: Multiple select rows (you can click on the row to select the record and only click on the Multi-box to select the record)

Ext.selection.CheckboxModel ({checkonly:true}), set Checkonly to True, When you click on a row record, the row is not selected, and you can select the line only by clicking the Multi box to the left of each row.The core code is as follows:App.jsExt.onready (function () {//turns on hover hint function ext.quicktips.init (); //turn on dynamic load ext.loader.setconfig ({ enabled:true}); //create an instance of the application ext.application ({//here requires need to be a number of groups, ExtJS

Mobile End H5 Development Turn.js to achieve a great turn-book effect _javascript skills

","./image/0 025.jpg ","./image/0026.jpg ","./image/0027.jpg ","./image/0028.jpg ","./image/0029.jpg ","./image/0030.jpg ","./ima Ge/0031.jpg ","./image/0032.jpg ","./image/0033.jpg ","./image/0034.jpg ","./image/0035.jpg ","./image/0036.jpg ",". /image/0037.jpg ","./image/0038.jpg ","./image/0039.jpg ","./image/0040.jpg ","./image/0041.jpg ",]; Load page function loading () {var numbers = 0; var length = Loading_img_url.length; for (var i = 0; i 4, the final implementation of the resu

Volume and pool of deep learning

is, each feature map has 1024 neurons, each neuron corresponding to the input image of a 5*5*3 area, that is, a neuron and the input image of this region has 75 connections, that is 75 weights parameters, then a total of 75 * 1024*10=768000 weight parameter, this is very complicated, so the convolution neural network introduces the principle of "weight value", that is, the 75 weights of each neuron on a feature map are shared by each neuron, so that only 75*10=

Multi-mysql instance configuration for single system in Centos6.3

-5.1.73.tar.gz # wget http://down1.chinaunix.net/distfiles/mysql-5.0.56.tar.gz 2. Pre-installation Initial configuration work: 1). Create a MySQL user # useradd MySQL 2). New MySQL under Data and log subdirectories # Mkdir/usr/local/mysql{3306,3307}/data # Mkdir/usr/local/mysql{3306,3307}/log 3). Modify the owner of the directory and the permissions of the group to which it belongs # Chown-r mysql:mysql/usr/local/my

SQL UNION ALL and UNION ALL syntax and examples

SQL UNION ALLUNION ALL the purpose of this instruction is to merge the results of two SQL statements together. The union all and the Union differ in that the Union all lists each qualifying data, regardless of whether the data value is duplicated or not. The syntax for union ALL is as follows: [SQL statement 1]UNION ALL[SQL Statement 2] We use the same example as the previous page to show the difference between Union and union. Also assume that we have the following two forms, Store_information

Summary of LNMP Virtual Host Security configuration in Linux

/local/php/etc/php-fpm-game01.conf: Listen.group = game01User=game01Group=game01Game02 with empathy. So we let PHP-FPM run with different users. Then came/home/wwwroot/: Chown Game01.game01-r game01Chown Game02.game02-r GAME02The GAME01 and GAME02 folders are given to users game01 and GAME02 respectively. Again, our nginx is run by the WWW user by default, so it is unable to read game01, game02 user files, if the file permissions set to 777, and can not prevent game01 read game02 files. The

Build your Website news automatic Publishing System four

" content= "None" "/head" "Body" "Form method=" POST "action=" delete.asp " "Table border=" 0 "width=" 750 "cellpadding=" 0 " "TR" TD width= "750" bgcolor= "#EBEBEB" colspan= "2" "Div align=" Center "" Center "" p "" Font Size= "3" "strong" information stored in the news database "/strong" "/font" "/td" "/TR" 《% Do as not rs.eof %》 TR align= "Center" "TD width=" 112 "bgcolor=" #EBEBEB "is deleted:"%if rs

Using merge to replace complex update statements

= To_char (2) and d.area_id = m.area_id and M.area_name = ' Yongxing sub-branches ') H on (A . target_mode_seq_id = h.seq_id) when matched THEN UPDATE SET a.performance_score = ' 0.00 ', A.assess_desc = ' Labor discipline Assessment ' WHERE A.com_date = to_date (' 20110801 ', ' YYYYMMDD ');-------------------------------------------------------------------- -------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU) | Time | ---------------------------------

SQL external to right on

Union directive, we will only see different data values (similar to SELECT DISTINCT). The UNION's syntax is as follows: [SQL Statement 1]UNION[SQL Statement 2] Let's say we have the following two tables, Store_information tableStore_name Sales DateLos Angeles $1500 jan-05-1999San Diego $ jan-07-1999Los Angeles $300 jan-08-1999Boston $700 jan-08-1999 Internet Sales Form Date Salesjan-07-1999 $jan-10-1999 $535jan-11-1999 $320jan-12-1999 $750 And

Artillery play enemy games (with source code)

   Animation effect: Click here to download the source file Frame contents of ball in main scene: Main scene as:gun_mc._rotation=-40; _root.ang=-40; _root.total=0; _root.attachmovie ("Fly", "Fly", 10,{_x:random (+) +220,_y:random (220) +10}); Up_btn.onpress=function () { Turnangle (5); if (gun_mc._rotationgun_mc._rotation=-85; } } Down_btn.onpress=function () { Turnangle (-5); if (gun_mc._rotation>-5) { gun_mc._rotation=-5; } } function Turnangle (TMP) { gun_mc._rotation+=-1*tmp; _root.ang=

CPU comparison: i3 4160 and i3 4170 which is good?

The following Pepsi net makes a detailed parameter comparison for everyone, as follows.   Intel Core i3 4170 and i3 4160 processor contrast Model i3 4170 i3 4160 Schema Haswell Refreshhaswell Refresh Slot LGA 1150LGA 1150 Frequency 3.7Ghz 3.6Ghz Cache 3M 3M Nuclear display HD4400 HD4400 Power 54w54w Price is about 800 yuan 750 yuan (boxed) Process 22nm process dual core four thread 22nm process dual core four threads Market Time 20152014 B

Learn some of the experience of CSS to make Web page summary

: total width: 750px ff/op:780px IE Weird mode: effective content width: 750-20-10 ff/op:750 IE6 Normal mode: same to Ff/op How to: Use the padding itself in a parent element or child element without using the Blank Edge Overlay: When two blank edges overlay, top or bottom will overlay the actual blank edge height = Blank side Large value Cases: 以下是引用片段: Blank Edge height of 20px But if you add a b

Go to SQL Union and SQL UNION ALL usage difference efficiency and issues with order by and group by mates

, because these two instructions can be retrieved from multiple tables. Union only shows the two results together, not the two tables ........ The syntax of UNION is as follows: [SQL statement 1]UNION[SQL Statement 2] Let's say we have the following two tables, store_information table store_name sales date los Angeles $1500 jan-05-1999

RedHat 6.7 Installing MySQL 5.7.18

Tags: mysql 5.7 installation configurationEnvironment Preparation:Operating system: RedHat 6.7Database: Mysql 5.7.181. Download mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz from official websiteWebsite address: http://dev.mysql.com/downloads/mysql/2. Create a MySQL user group/user, the data directory and its user directoryMkdir/home/mysqlMkdir/mysql_dataGROUPADD-G 505 MySQLUseradd-u 506-g mysql -s/bin/false-d/home/mysql MySQL3. Unzip the installation package and copy the contents of the unpacking

General permissions and several special permissions under Linux systems

file temporarily has the permissions of its owner.We experiment with Command touch: first check that touch permission is 755, then switch to Liubei, create a file liubei1.file, then modify the permissions to 750, switch to Liubei, create a file liubei2.file, and then modify the permissions, plus U+s , switch to Liubei, create Liubei3.file, modify the permissions to 751, and add suid permissions, switch to Liubei, create liubei4.file, and finally modi

SQL Outer Join left on right on

syntax is as follows: [SQL statement 1]UNION[SQL statement 2] Suppose we have two tables, Store_Information tableStore_name Sales DateLos Angeles $1500 Jan-05-1999San Diego $250 Jan-07-1999Los Angeles $300 Jan-08-1999Boston $700 Jan-08-1999 Internet Sales table Date SalesJan-07-1999 $250Jan-10-1999 $535Jan-11-1999 $320January 12-1999 $750 We need to find out all the days with a turnover. To achieve this goal, we use the following SQL statement: SELEC

Big screen iphone adaptation +ios picture size requirements

@3x.In addition, IPhone6 Plus is a bit different from other devices: the screen resolution obtained within the app is 1242*2208, but the actual resolution of the device is 1920*1080, when the system will zoom in on the overall display, downscale to 1/1.15. This feature has also appeared on OSX:Here are some of the data that might be useful: iPhone iPhone4 iPhone5 iPhone6 iphone6+ Point 320*480 320*480 320*568 375*667

Code explanation for Borderless window

*//* UsageIf you want to open a borderless window like main.html for a file such as 1.html.Put the first part of the code in this file.Then connectChangeIn the directory where the file is located1. CreateChromelesstit.html;Contacting.html;Load.html;For the HTML code of the three files, see the appendix of this article. (Do not make any changes)2. CreateA directory named images (case sensitive, not required if any)Http // lain.oso.com.cn/x_a.gif;Http // lain.oso.com.cn/x_d.gif;Http // lain.oso.co

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