3com 4400

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Linux User and Group management

propertiesFormat: chage option USERNAME-M: Minimum use time-M : Maximum use time-I: Inactivity periodSuch as:#chage-M 2 testing9. IdView your account informationFormat: ID option USERNAME-U UID: View account ID-G GID: View Group IDSuch as:# Id-u Testing10, SuSwitch usersFormat su option USERNAMESuch as:# Su-rootComprehensive Exercises:1 , create users Mandriva, its ID to be 2200 , the Base Group is distro, the group ID is 3300, and the additional group is Peguin ;[[email protected]/]# groupadd

Zombie Processes in Linux systems

: [email protected]:~$ PS aux | Grep-w'Z' + 2211 1.2 0.0 0 0? Z -: - 6: -[Chromium-browse] + 4400 0.0 0.0 0 0? Z October 160:xx[FCITX] + 10871 0.0 0.0 0 0pts/4z+ A: + 0:xx[Zombie] as can be seen from the above, there is a zombie process in the system. But if the parent process wakes up after waking up, we look at the system process information again and find that the zombie process is missing. [ema

Millet Notebook Air 13.3 configuration How about millet notebook air can play games?

independent video card, has 384 stream processors, this is the GeForce 940M GDDR5 Memory Edition, but the bit width still is 64-bit,geforce 940M specification and the performance is equivalent to the desktop on the GT 640 D5 video card. Interestingly, in the official Nvidia introduction, the GeForce 940MX performance score is 4 times times the Intel HD Graphics 4400, and the most recent popular game "watch pioneer" minimum configur

In MySQL, case, then else end usage

Computer N 400 5 Chemical N 500 6 Mathematical N Some students choose to take several courses at the same time (100,200) Some students choose only one course (300,400,500). Students taking multiple courses are asked to choose a course as their major, with the major flag written in Y. Students who choose only one course, majoring in flag n (in fact, if written in Y, will not have the following trouble, in order to give

case in syntax SQL then else end usage-resolves a field to take a different value based on the condition

selected master course ID The simple idea is to execute two different SQL statements to query.Condition 1--Condition 1: Only one course of students selected std_id, MAX (class_id) as Main_classfrom Studentclassgroup by Std_idhaving COUNT (*) = 1;Execution Results 1std_id main_class------ ---------- 4400 5500 6Condition 2-Condition 2: Select std_id for multiple courses, class_id as Main_classfrom studentclasswhere main_class_fl

MySQL Cluster build-up

shutdownNDB_MGM-E shutdownStartup of the cluster:1. Start the Management node:Bin/ndb_mgmd-f/opt/mysql-cluster/etc/config.ini--reload--configdir=/opt/mysql-cluster #修改配置文件后要加上--reload will take effect.2. Start the Data node:BIN/NDBD--connect-string= "nodeid=2;host=172.16.48.204:1186" #各个数据节点的nodeid可以在管理节点上show看到3. Start the SQL node:Bin/mysqld_safe--defaults-file=/opt/mysql-cluster/etc/my.cnf--basedir=/opt/mysql-cluster--datadir=/opt/ Mysql-cluster/data--user=mysql Report:Config.ini file detail

Is the Lookout Vanguard Computer Configuration request high? What is the minimum configuration?

recently, Blizzard Entertainment Company's newly listed game "watch Pioneer" by many players love, did not start to play the player also began to understand their own home computer can play, so many new players began to ask "watch pioneer Computer Configuration to how to play", "watch pioneer Computer Configuration requirements High" and so on, The following is the official given the watch pioneer Computer Configuration requirements, please control the home computer to meet the needs of the.

ORA-04031 Error Analysis and resolution

IsDefault, Decode (Bitand (y.ksppstvf,7), 1, ' Modified ', 4, ' System_mod ', ' false ') Ismod, Decode (Bitand (y.ksppstvf,2), 2, ' true ', ' false ') Isadj From Sys.x$ksppi x, SYS.X$KSPPCV y where x.inst_id = Userenv (' instance ') and y.inst_id = Userenv (' instance ') and X.indx = Y.indx and x.ksppinm like ' _shared_pool% '---/**_% query all implied parameters ' / NAME VALUE ISDEF ismod Isadj ----------------------------------- ------- ----- ----- --------------------------------------------

Go Oracle DB uses subqueries to resolve queries

Employees GROUP by department_id)*ERROR at line 3:Ora-01427:single-row subquery returns more than one rowA common error with subqueries is that a single-line subquery returns more than one row. In the example SQL statement, the subquery contains a GROUP BY clause, which means that the subquery returnsMultiline , each line corresponds to a group it finds. In this case, the result of the subquery is 4400, 6000,2500, 4200, 7000, 17000 and 8300. The exte

Case in SQL and then else end usage

following two conditions People who take only one course, return the ID of that course For those who take multiple courses, return to the selected master course ID The simple idea is to execute two different SQL statements to query.Condition 1--Condition 1: Only one course of students selected std_id, MAX (class_id) as Main_classfrom Studentclassgroup by Std_idhaving COUNT (*) = 1;Execution Results 1std_id main_class------ ----------

MySQL operation query results case-then-else End usage example

, MAX (class_id) as Main_classFrom StudentClassGROUP by std_idHaving COUNT (*) = 1;Execution Results 1std_id Main_class------ ----------300 4400 5500 6Condition 2-Condition 2: Students who choose multiple coursesSELECT std_id, class_id as Main_classFrom StudentClassWHERE main_class_flg = ' Y ';Execution Results 2std_id Main_class------ ----------100 1200 3If you use the case function, we can solve the problem with just one SQL statement, as shown belo

MySQL operation query results case-then-else End usage example

courseSELECT std_id, MAX (class_id) as Main_classFrom StudentClassGROUP by std_idHaving COUNT (*) = 1;Execution Results 1std_id Main_class------ ----------300 4400 5500 6Condition 2-Condition 2: Students who choose multiple coursesSELECT std_id, class_id as Main_classFrom StudentClassWHERE main_class_flg = ' Y ';Execution Results 2std_id Main_class------ ----------100 1200 3If you use the case function, we can solve the problem with just one SQL stat

This article discusses the problems related to the optimization of the four-phase adjacent area of the TD wireless network.

condition to RNC. Then, the UE reports the neighbor measurement report to RNC. Finally, RNC reports neighbor measurement reports to OMC-R, and OMC-R records and stores UE neighbor measurement reports. Promotion Effect and Benefits 1. added the scientific nature of Problem Analysis with objective and massive Statistical Data Analysis The measurement reports actually sent by users in TD wireless networks are used as the basis for analysis and identification, and the IT measures are used to solidi

WiMAX wireless broadband technology is difficult to split into frequencies (1)

used in Beijing, Nanjing, Jiangyin, Jiangsu, and Guizhou karst areas. Other business may not interfere with it. 3000 ~ 3400 MHz: This frequency band can work in TDD licensed frequencies. Currently, China plans to use it for radio positioning, fixed, mobile, and business purposes, but it is rarely used.3400 ~ 4200 MHz: it belongs to the C-band of satellite communication, and a large amount of microwave is in use.4400 ~ 4990 MHz: According to CHN21,

Full explanation of Ubuntu7.10's 3D desktop installation and configuration

After Ubuntu7.10 was released, it was integrated with compiz-fusion to easily implement 3D effects. Many friends would like to experience it, but it seems that the installation process is not clear and cannot be implemented, now I will write out the configuration process for your reference (ATI graphics card ). 1. After installing the system, set the software source and then update the system. Run the command: sudoapt-getupgrade to run glxgears for more than

The 3D effect is successfully set in Ubuntu7.10.

After Ubuntu7.10 was released, it was integrated with compiz-fusion to easily implement 3D effects. Many friends would like to experience it, but it seems that the installation process is not clear and cannot be implemented, now I will write out the configuration process for your reference (ATI graphics card ). 1. After installing the system, set the software source and then update the system. Run the command: sudoapt-getupgrade to run glxgears for more than

Scale--bark scale and Mel scale in audio processing

3 250 200 300 4 350 300 400 5 450 400 510 6 570 510 630 7 700 630 770 8 840 770 920 9 1000 920 1080 10 1170 1080 1270 11 1370 1270 1480 12 1600 1480 1720 13 1850 1720 2000

Mesos cluster Installation Deployment Chronos (5)

###############################################################Chronos Installation Deployment###############################################################Chronos is a fault-tolerant job scheduler that can handle dependencies and ISO8601-based scheduling. Chronos is an open source product launched by Airbnb to replace Cron. You can use it to orchestrate jobs, support the use of Mesos as job actuators, and support interacting with Hadoop. You can define triggers after the job execution is compl

Usleep do not quit the discovery that has been sleeping

:171956,166904:5052:3600:-1452,percent=-40%select:176039,171964:4075:3700:-375,percent=-10%usleep:181117,176046:5071:3700:-1371,percent=-37%select:185191,181124:4067:3800:-267,percent=-7%usleep:190281,185199:5082:3800:-1282,percent=-33%select:194356,190288:4068:3900:-168,percent=-4%usleep:199434,194363:5071:3900:-1171,percent=-30%select:203505,199441:4064:4000:-64,percent=-1%usleep:208602,203512:5090:4000:-1090,percent=-27%select:213697,208609:5088:4100:-988,percent=-24%usleep:218775,213704:5071

How to Use case statements in SQL

students choose to take several courses (100,200) at the same time, and some students choose only one course (300,400,500 ). If you are a student of multiple courses, You must select a course as your major. The major is flag, which is written into Y. Students who only select one course, whose major is flag is N (in fact, if I write Y, there will be no troubles below. For example, please include more ).Now we need to query the table according to the following two conditions:The person who takes

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