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variety of colors or independent transparent label folder; (2) Intelligent management of racks and cables. (1) Wiring color identification management method, suitable for the integrated wiring System project scale is small, the user information point quantity is not many, the network structure is simple and is dispersed, only a few main lines or a few floor wiring frame, usually uses the color marking management plan. (2) Wiring Intelligent management mode, apply to the integrated wiring syst
Recently participated in the seven-cow demo contest, decided to use Ruby development. So I ran into some questions and then solved them, and here's a record. In Ruby, Gem is a very common thing, it is the equivalent of Plug-ins, Ruby has a lot of great gems, to avoid the repetition of our wheels, my demo need to install gem, but in order to achieve better, first detect whether the gem has been installed, if not installed, continue to install, otherwise not installed. So, how to detect gem in R
humidity from the site. -storage location requires real-time reporting of secure environment and accident and service-related issues. -as the volume of data increases significantly, the scalability of the storage and power protection solutions becomes as critical as any other factor. -APC has solutions that can be customized to adequately store and protect your valuable data and improve availability. What kind of APC solution should you choose as a storage solution? Distributed and regional
different components. The types of updates that are frequently encountered during the lifecycle maintenance operations of an application in the data center include: Application Updates Middleware Update Schema, image, and script package updates Other updates, such as operating system sharing and security patches We will describe these update types in the context of pureapplication system and describe how pureapplication system helps to apply these updates seamlessly when leveraging the abo
house cannot lay down all the books. They are beyond the size your small library can carry. You have to buy or rent an adjoining building and put the book in it. This can be problematic because the buildings near you are limited, or the real estate price is so high that it is unsustainable to rent the expensive house next door. So you have to think carefully about which house to rent and how to find those that are very close and cost-effective for storing books.This is true simulation, the data
102182/usr/local/mysql/bin/mysqld_safe (deleted) mysqld 11353 MySQL t XT REG 8,6 29382763 102138/usr/local/mysql/bin/mysql D (deleted) mysqld 11353 MySQL 5u reg NBS p;8,9 0 NBSP;58761/TMP/IBPFBHSA (deleted) mysqld 11353 nbsp ; MySQL 6u reg 8,9 0 N Bsp 58771 /tmp/ibqomnag (Deleted) mysqld 11353 MySQL 7u reg NBSP ; 8,9 0 NBSP;58772/TMP/IBN4C4RL (deleted) mysqld 11353 MySQL 8u reg 8,9 NBS P 0 NBSP;58781/TMP/IBKWP8ZR (deleted) m
(deleted)Mysqld 19046 MySQL 6u REG 8,3 0 84754435/home/mysqldata/tmp/iblk1saz (deleted)Mysqld 19046 MySQL 7u REG 8,3 0 84754436/home/mysqldata/tmp/ibrnpyfu (deleted)Mysqld 19046 MySQL 8u REG 8,3 0 84754437/home/mysqldata/tmp/ibp28syz (deleted)Mysqld 19046 MySQL 12u REG 8,3 0 84754438/home/mysqldata/tmp/ib9lzprv (deleted)Mysqld 19046 mysql 330u REG 8,3 344400 84754439/home/mysqldata/tmp/mlfsrphn (Deleted)Mysqld 19046 mysql 341u REG 8,3 627873 95371267
478-f-b-d/tmp----OrWhile true; do date; PS AUXF | awk ' {if ($8== "D") print $;} '; Sleep 1; DoneTue 20:03:54 CLT 2011Root 302 0.0 0.0 0 0? D May22 2:58 \_ [Kdmflush]Root 321 0.0 0.0 0 0? D May22 4:11 \_ [jbd2/dm-0-8]Tue 20:03:55 CLT 2011Tue 20:03:56 CLT 2011Cat/proc/16528/iorchar:48752567wchar:549961789syscr:5967syscw:67138read_bytes:49020928write_bytes:549961728cancelled_write_bytes:0 Lsof-p 16528COMMAND PID USER FD TYPE DEVICE size/off NODE NAMEbonnie++ 16528 root cwd DIR 252,0 4096 130597/t
an instance method named NewObject with a single integer parameter named type and a return value of type ID. The ID type is an important data type that is often used in this book. The purpose of this type is to maintain the integrity of the book. The ID type is an important feature in Objective-c, which is the basis for polymorphism and dynamic binding, which are discussed in detail in the 9th chapter, "polymorphic, dynamic type, and dynamic binding." Table 4.1 summarizes the basic data types a
distribute the hosts file on all machines, and the distribution failed, no successful distribution of the machine information sent to the operator in the form of mail.The first scenario: the client uses mail and the server uses PosfixStart the Posfix service[Email protected] ~]#/etc/init.d/postfix restartShutting down postfix: [OK]starting postfix: [OK][[email protected] ~]# Lsof-i: 25COMMAND PID USER FD TYPE DEVICE size/off NODE NAMEMaster 3601 Root 12u
manual "6.4.8. How MySQL Opens and Closes Tables" that every time a MyISAM table is opened, we need two file descriptors for verification. 1. Restart mysqld /etc/init.d/mysql restart 2. Check that several files are opened. lsof | grep /home/mysql ... mysqld 24349 mysql 5u unix 0x000001041e8de040 4244009 /home/mysql/mysql.sock mysqld 24349 mysql 6u REG 8,33 2048 30425188 /home/mysql/mysql/host.MYI mysqld 24349 mysql 7u REG 8,33 0 30425189 /home/mysql/mysql/host.
:48:15 score: 0? In the first case, three groups can be found on the computer at 1 U = 3, V = 1U = 5, V = 2U = 49, V = 31 TopReply to: mathe () (one star (intermediate) Credit: 105 12:53:49 score: 0? In the second case, the solution cannot be found when u In the third case, you can find the solution when u is less than 100.U = 41, V = 12 TopReply to: mathe () (one star (intermediate) Credit: 105 13:02:43 score: 0? Case 1:U = 3, V = 1, A = 48/41U = 5, V = 2, A = 2420/641.U = 49, V = 31, A = 14707
://repo.saltstack.com/yum/amazon/salt-amzn-repo-2016.11-1.amzn1.noarch.rpm[Email protected] ~]# RPM-IVH salt-amzn-repo-2016.11-1.amzn1.noarch.rpmPreparing ... ################################# [100%]Updating/installing ...1:salt-amzn-repo-2016.11-1.amzn1 ################################# [100%][email protected] ~]# Yum install salt-master-y #服务端[email protected] ~]# yum install salt-minion-y #客户端[email protected] ~]# yum Install Salt-ssh[email protected] ~]# yum Install Salt-syndic[email protect
10.20.168.13: 41128-> 10.20.172.88: 20880 (ESTABLISHED) java 27709 713 347u IPv4 87271865 TCP 10.20.168.13: 46782-> 10.20.172.1: 20880 (ESTABLISHED) you can see that the process pid listening to port 20880 is 25755, user is 712i4 is to query ipv4 port [html] [wei @ vm-cbu-qa-168-13 web-deploy] $ lsof-Pnl + M-i4 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME portmap 1616 32 3u IPv4 3488 UDP *: 111 [portmapper] portmap 1616 32 4u IPv4 3489 TCP *: 111 [portmapper] (LISTEN) DragoonAg 4153 0 6u IPv4
wait IO, we can start from this point and then locate the problem step by step: # For x in 'seq 10'; do ps-eo state, pid, cmd | grep "^ D"; echo "----"; sleep 5; done D 248 [jbd2/dm-0-8] D 16528 bonnie ++-n 0-u 0-r 239-s 478-f-B-d/tmp ---- D 22 [kdmflush] D 16528 bonnie ++-n 0-u 0-r 239-s 478-f-B-d/tmp ---- # Or: # While true; do date; ps auxf | awk '{if ($8 = "D") print $0 ;}'; sleep 1; done TueAug2320: 03: 54clt 2011 Root 302.1600.000? D May222: 58 \ _ [kdmflush] Root 3210.00.000
security of sensitive information such as passwords is threatened at this time ). This is just a simple example. In reality, this vulnerability may not exist, but reveals the severity of the formatting string problem. If the provided parameters are % N and are carefully constructed, data can be written to any memory address, which means that the program with the vulnerability can execute any code we submit.The function where the OD problem occurs this time is not printf, but sprintf. Although t
) mysqld_sa 11317 root 255r REG 13620 102182/usr/local/mysql/bin/mysqld_safe (deleted) mysqld 11353 mysql txt REG 8, 6 29382763 102138/usr/local/mysql/bin/mysqld (deleted) mysqld 11353 mysql 5u REG 8, 9 0 58761/tmp/ibpfbHsa (deleted) mysqld 11353 mysql 6u REG 8, 9 0 58771/tmp/ibqoMnag (deleted) mysqld 11353 mysql 7u REG 8, 9 0 58772/tmp/ibN4C4Rl (deleted) mysqld 11353 mysql 8u REG 8, 9 0 58781/tmp/ibkWP8zr (deleted) mysqld 11353 mysql 12u REG 8, 9 0 5
301476 37428? Sl/usr/local/mysql/bin/mysqld -- basedir =/usr/local/mysql -- datadir =/usr/local/mysql/data -- plugin-dir =/usr /local/mysql/lib/plugin -- user = mysql -- log-error =/usr/local/mysql/data/test. err -- pid-file =/usr/local/mysql/data/test. pid -- socket =/usr/local/mysql. sock -- ports = 3306Root 8002 0.0 0.0 2264 680 pts/2 S + grep mysql 3. check the process lsof-I: 3306 running on port 3306.Test :~ # Lsof-I: 3306Command pid user fd type device size/OFF NODE NAMEMysqld 4620 mysql
type Example NSLog chars Char ' A ', ' \ n ' %c Short int -%hi,%HX,%ho unsigned short int %hu,%HX,%ho Int -97, 0XFFE0, 0177 %i,%x,%o unsigned int 12u, 100U, 0XFFu %u,%x,%o Long int 12L, -2001, 0xffffL %li,%LX,%lo unsigned long int 12UL, 100ul, 0xffeeUL %lu,%LX,%lo
: 20880 (ESTABLISHED) www.2cto.com java 25755 712 573u IPv4 87265754 TCP 10.20.168.13: 34315-> 10.20.168.17: 20880 (ESTABLISHED) java 27709 713 339u IPv4 87271862 TCP 10.20.168.13: 50212-> 10.20.172.11: 20880 (ESTABLISHED) java 27709 713 341u IPv4 87271859 TCP 10.20.168.13: 41128-> 10.20.172.88: 20880 (ESTABLISHED) java 27709 713 347u IPv4 87271865 TCP 10.20.168.13: 46782-> 10.20.172.1: 20880 (ESTABLISHED) you can see that the process pid listening to Port 20880 is 25755, user is 712i4 is to que
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