gs1 128

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Why does the Linux0.00 kernel have to set the 0x80 trap gate itself to invoke the Write_char process?

I did not pay attention to this problem at first, just through the trap door feel very mealy, why not directly call Write_char in Level 3 user code, today's own writing program want to call the code snippet, only to find the big problem. I wrote a process similar to Write_char, with the following code:Dividing_line:push%GSPUSHL%EBXPUSHL%ecxmovl $1,%ecx/* Output 1 spaces ' */movl $SCRN _SEL,%EBXMOVW%bx,%gs1:movl scr_loc,% EBXSHL $1,%ebxmovb $32,%gs: (%

Oracle 8x Monitoring sysdba role User Login _oracle

auditing at all. In this file, the connected user, the name of the terminal machine and the login time are recorded. Based on this information, we can easily monitor who is logged into the database with SYSDBA privileges. Here is an example: 1. First connect the database server in the client Sqlplus with SYSDBA: Sql> Conn SYS@GS1 as Sysdba Please enter password: ******** is connected. 2. View the contents of the latest Ora_.aud file in the

oracle8x Monitoring SYSDBA User Login

the login time are recorded. Based on this information, we can easily monitor who is logged into the database with SYSDBA privileges. Here is an example: 1. First connect the database server in the client Sqlplus with SYSDBA: Sql> Conn SYS@GS1 as Sysdba Please enter password: ******** is connected. 2. View the contents of the latest Ora_.aud file in the server-side $oracle_home/rdbms/audit directory: Nbtax1> Cat Or

Oracle 8x Monitor sysdba role User Login

the login time are recorded. Based on this information, we can easily monitor who is logged into the database with SYSDBA privileges. Here is an example: 1. First connect the database server in the client Sqlplus with SYSDBA: Sql> Conn SYS@GS1 as Sysdba Please enter password: ******** is connected. 2. View the contents of the latest Ora_.aud file in the server-side $oracle_home/rdbms/audit directory: nbtax1> cat ora_589980.aud Audit file /ora1/

[Reprint] Cryptographic algorithm library CRYPTO--NODEJS middleware series

crypto package also provides a large number of algorithmic support. Create a new file Cipher.js and print out the supported algorithms.~ vi cipher.jsvar crypto = require(‘crypto‘);console.log(crypto.getCiphers());Run the program~ Node cipher.js[' CAST-CBC ', ' AES-128-CBC ', ' aes-128-cbc-hmac-sha1 ', ' aes-128-cfb ', ' aes-

VBA operations on INI files

,_Optional ByVal strEndChar As String = vbNullChar) As StringDim intPos As IntegerIntPos = InStr (1, strApiString, strEndChar)If intPos> 0 ThenPGetStringFromAPI = Left (strApiString, intPos-1)ElsePGetStringFromAPI = strApiStringEnd IfEnd Function '@ (F)''The device power: INI has been successfully obtained.''Failback sequence: INI has already been used when setting sequence (when not set, ARG3 has already been used to return sequence)''Number of arguments: ARG1-maximum number of argume

Nodejs's crypto encryption

(Crypto.getciphers ());[' AES-128-CBC ', ' aes-128-ccm ', ' aes-128-cfb ', ' aes-128-cfb1 ', ' aes-128-cfb8 ', ' aes-128-ctr ', ' AES-128-ECB ', ' AES -

Connect on the Apple 5 has been playing music after a period of chaos, and found that the Bluetooth connection has been disconnected, in the mobile phone side when manually back to the crash printing information (even the app)

Problem Description: The connection on the Apple 5 has been playing music after a period of chaos, and found that Bluetooth connection has been disconnected, in the mobile phone side when manually back to the crash printing information (even the app)Log:Update 26m:diff=10 ms=279 ppb=35794Bt_xtal_sync:bad ppb=35794 last_valid_ppb=23292 last_tune_ppb=0 (5)bt_xtal_sync:ms=1203365 bit_offset=306bt_xtal_sync:ms=1203389 bit_offset=307bt_xtal_sync:ms=1203433 bit_offset=306bt_xtal_sync:ms=1203480 bit_of

Conversion of PHP ASCII code and string

[Code]php Code: Class ASCII { /** * Convert ASCII code to string * @param type $str the string to decode * @param type $prefix prefix, default: # * @return Type */ function decode ($str, $prefix = "#") { $str = Str_replace ($prefix, "", $str); $a = explode (";", $str); foreach ($a as $dec) { if ($dec $utf. = Chr ($DEC); else if ($dec $utf. = Chr (($dec-($dec% 64))/64); $utf. = chr (128 + ($dec% 64)); } else { $utf. = Chr (224 + (

Application Version Upgrade

minimum and updated versions of the program. The adm_clientrelease data table stores the specific information of the updated version of the program. The releasedata field has the data type varbinary (max), which stores the binary of the updated version of the program to be released.CodeItself. The following is a stored procedure for reading the adm_configuration data table: Create procedure [DBO]. [pradm_getconfiguration] @ thekey nvarchar (50), @ value nvarchar (

Run multiple MySQL services on the same machine

=/usr/local/mysql/data1/db-app.log Datadir =/usr/local/mysql/data User = mysql [Mysqld2] Port = 3307 Socket =/tmp/mysql. sock2 Pid-file =/usr/local/mysql/data2/db-app2.pid Datadir =/usr/local/mysql/data2 Log =/usr/local/mysql/data2/db-app.log User = mysql [Mysqld3] Port = 3308 Socket =/tmp/mysql. sock3 Pid-file =/usr/local/mysql/data3/db-app3.pid3 Datadir =/usr/local/mysql/data3 Log =/usr/local/mysql/data3/db-app.log User = mysql [Mysqld4] Port = 3309 Socket =/tmp/mysql. s

[Path to Java Development] (19) Long cache

[Path to Java Development] (19) Long cache Long has a small trap, that is, within the range of-128 to 127, Long. the long instances returned by valueOf (Long l) are the same, and the returned instances are different each time valueOf (long l) is used outside this range. Example: System.out.println(Long.valueOf(-129) == Long.valueOf(-129)); // false System.out.println(Long.valueOf(-128) == Long.valueOf(-

WIN10 System official version of the dark theme Open tutorial

▲ Effect Chart The method is not difficult, specific as follows: 1. Create a new text document 2. Copy the following code into it (be careful not to omit it): ; Copyright©microsoft Corp. [Theme] ; Windows-ids_theme_displayname_aero Displayname=alldarkevev2 THEMEID={30C467D0-E8DB-46AC-BC88-C9A157F57D63} [Control Panel\Desktop] Pictureposition=4 [VisualStyles] Path=%systemroot%\resources\the

The insider of the high-performance database connection pool

lower QPS 4: Apply frequent create connections and close connections, resulting in more temporary objects, GC frequent 5: After closing the connection, there will be a large number of time_wait TCP states (closed after 2 MSL) Using the connection pooling process The first time you visit, you need to establish a connection. However, subsequent accesses are reused for the previously created connection. Advantages : 1: Less network overhead 2: The performance of the system will have a substantia

Java Basics-Original code, anti-code, and complementary explanation

On a reference to the original code, anti-code and complement (see http://www.linuxidc.com/Linux/2015-02/113862.htm), but he also smoothed a half-day, a little understanding of the appearance, but can not be clearly expressed. Now remember the following two points:The inverse code and the complement of positive numbers are the same as the original code;Negative inverse code, complement and the original code is different, negative anti-code: The original code to remove the sign bit, the other val

The difference between an integer and an int

==integernewnum); A at //compare integers with Newinteger -System.out.print ("Integer and Newinteger:"); -System.out.println (integernum==integernewnum); - - //comparison of two Newinteger -Integer INTEGERNEWNUM1 =NewInteger (127); inSystem.out.print ("Newinteger and Newinteger:"); -System.out.println (integernewnum==integerNewNum1); to + //compare two declaration variables less than 128

Run multiple MySQL services on the same machine

=/usr/local/mysql/data2/db-app2.pid Datadir =/usr/local/mysql/data2 Log =/usr/local/mysql/data2/db-app.log User = mysql [Mysqld3] Port = 3308 Socket =/tmp/mysql. sock3 Pid-file =/usr/local/mysql/data3/db-app3.pid3 Datadir =/usr/local/mysql/data3 Log =/usr/local/mysql/data3/db-app.log User = mysql [Mysqld4] Port = 3309 Socket =/tmp/mysql. sock4 Pid-file =/usr/local/mysql/data3/db-app4.pid Datadir =/usr/local/mysql/data4 Log =/usr/local/mysql/data4/db-app.log User = mysql [Mysqldump] Quick Max_al

Ss Command to view connections

show all tcp socketss-u-a show all UDP Socektss-o state established '(dport =: smtp or sport =: smtp) 'display all established SMTP connections ss-o state established' (dport =: http or sport =: http) 'display all established HTTP connections ss-x src/tmp /. x11-unix/* Find out all processes connected to X Server ss-s list current socket details: Show sockets brief information list current connected, closed, waiting tcp connection # ss-sTotal: 3519 (kernel 3691) TCP: 26557 (Estab 3163, closed 2

[Ai refining] machine learning 051-bag of Vision Model + extreme random forest to build an image classifier

course, there are many improvements to this disadvantage ). The core idea of bovw is as follows. Some people have asked, there are many methods to extract image features, such as sift Feature Extraction and star feature extraction. Why do we need to use bovw models to characterize the image? Because of Sift, the feature vectors obtained by star feature extraction machines are multidimensional. For example, the sift vectors are 128 dimensions, and an

Settings for various colors and backgrounds in eclipse

, 0Fields (field): 128, 0, 128 purpleKeyWord ' return ' (keyword ' return '): 255, 0, 0 redKeyword excluding ' return ' (except for keyword return): 255, 128, 0 orangeLocal variable declarations (variable declaration): 128, 128, 128

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