everything rf

a full-library backup:Innobackupex--defaults-file=/home/q/percona-server/etc/my.cnf--user=backup backup/To turn off the database service:Kill-9 $ (ps-ef|grep "MySQL" |gawk ' $!~/grep/{print $} ' |tr-s ' n ')Delete the current data file:rm-rf/home/q/percona-server/data/*Recovery log File:Innobackupex--defaults-file=/home/q/percona-server/etc/my.cnf--apply-log--user=backup backup/To recover a data file:Innobackupex--defaults-file=/home/q/percona-server

Cluster synchronization Services daemon. Oracle CRS Stack is not running. Oracle CRS stack is down now. Removing script for Oracle Cluster Ready Services Updating OCR file for downgrade Cleaning up SCR settings in '/VAR/OPT/ORACLE/SCLS_SCR ' Cleaning up Network socket directories 2. Execute rootdeinstall.sh Script * #./rootdeinstall.sh Verifying existence of Ocr.loc file Removing contents from OCR mirror device 2560+0 Records in 2560+0 Records out Removing contents from OCR device

Deleting a directory in linux is very simple. many people are still used to using rmdir. However, once the directory is not empty, it is deeply worried. now we can use the rm-rf command. You can simply use rm, but you need to add two parameters-rf: rm-rf directory name-r is recursive down, no matter how many levels... Deleting a directory in linux is very simple

Manually uninstall the Oracle Database System Environment on Linux: Red Hat Enterprise Linux Server release 5.5 (Tikanga) Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 steps are as follows: 1. stop all Oracle processes $ sqlplus/as sysdba // for asm instance $ sqlplus/as sysasm SQL> shutdonw immediate $ lsnrctl stop 2. delete the Oracle installation directory # rm-rf/u01/app 3. delete related users and user groups # userdel-r oracle # grou

Oracle10g11grac Virtual Environment SwitchOracle 10g 11g rac is installed on a personal virtual machine. The following is a switchover script command.#10g rac> 11g rac ******************************** ********###############Cat/etc/inittab>/etc/inittab10gCat/etc/inittab11g>/etc/inittab#Rm-rf/etc/oracle10gMv/etc/oracle/etc/oracle10gCp-rp/etc/oracle11g/etc/oracle#Cat/etc/oraInst. loc>/etc/oraInst. loc10gRm-rf

1. Stop Resource: Close crs Resource: crsctlstopresources close crs: crsctlstopcrs2. use Script: two nodes rootdelete. sh, rootdeinstall. sh3. Delete startup Item: rm-rfetcoracle * rm-fetcinit.dinit.cssdrm-fetcinit.dinit.crsrm-fetcinit.din 1. stop resources: Disable crs resources: crsctl stop resources disable crs: crsctl stop crs 2. script: two nodes rootdelete. sh, rootdeinstall. sh 3. delete a startup Item: rm-rf/etc/oracle/* rm-f/etc/init. d/init.

SQL> select * from v $ dbfile; -- obtains the location information of the data file. SQL> select * from v $ logfile; -- get the location information of the log file SQL> archive log list; -- view the archived sequence and location information SQL> shutdown abort; -- directly shutdown abort because data is no longer needed 3. Start to mount (use exclusive restart) The Code is as follows: SQL> startup mount exclusive restrict; 4. Modify the parameter to allow restricted session mode. The Code is

, you can specify the O_NONBLOCK option to enable the non-blocking mode. The named pipe must be opened in read-only or write-only mode. It cannot be opened in read + write mode because it is unidirectional communication. To implement bidirectional communication, you must open two named pipelines. The following is an example of using a named pipe in Python to implement inter-process communication. Server import os, timeread_path = "/tmp/pipe.in"write_path = "/tmp/pipe.out"if os.path.exists(read_p

driver directoryMkdir/system/library/extensions/backupBuild a backup directory on the desktop back upmkdir/user/User name/desktop/backupCopy filesCP parameter source file destination fileExample: Want to copy the desktop Natit.kext to the drive directoryCp-r/user/User Name/desktop/natit.kext/system/library/extensionsThe parameter R indicates a recursive operation of the directory, and Kext looks like a file under the graphical interface, which is actually a folder.Back up all files in the drive

MIT has announced that researchers at the university have developed a system (WI-VI) that can detect human movement through WiFi signals. According to MIT, the system can detect the movement of the human body behind the reinforced concrete walls, and its future can be used as a low-priced detection radar. and named the invention the "rf-trap.""The invention is useful, for example, to search for survivors in a fire building," The Massachusetts Institut

First, delete Percona server1. Close Mysqld service mysqld stop, and then remove rm-rf/etc/my.cnf2. Delete the rm-rf/usr/local/percona-server-5.5.33-rel31.1-566.linux.x86_64 folder3. Remove the soft link rm-rf/usr/local/mysql4.chkconfig--del mysqldDelete Rm-rf/etc/init.d/mysqld5. Delete MySQL user, and group/usr/sbin/u

Here 6 Redis nodes are created, of which three are primary and three are slave nodes.Redis and Port correspondence:127.0.0.1:7000127.0.0.1:7001127.0.0.1:7002From:127.0.0.1:7003127.0.0.1:7004127.0.0.1:7005Steps:1, download Redis. Download 3.0.0 version, the previous version does not support cluster mode: http://download.redis.io/releases/redis-3.0.0.tar.gz2: Upload server, unzip, compileTAR-ZXVF redis-3.0.0.tar.gzMV redis-3.0.0 redis3.0cd/usr/local/redis3.0Make make Install3: Create the director

Description: 8 tomcat running on a single serverCase in the way:#!/bin/Bash#reboot Tomcat!!!#Author: FansikEcho-E"\033[1;42;31mchoice TOMCATNO REBOOT!!! \033[0m"CatEOF1: Reboot tomcat80812: Reboot tomcat80823: Reboot tomcat80834: Reboot tomcat80845: Reboot tomcat80856: Reboot tomcat80867: Reboot tomcat80878: Reboot Tomcat8088eofread-TTen-P"Enter a mnumber:"Numbernumber=${number:-1} Caseinch 1) proid=`PS-ef |greptomcat8081 |grepjava |awk '{print $}'` Kill-9$proIdSleep 5CD/usr/tomcats/to

Generally speaking, Lin's explanation to the random forest is mainly on the general algorithm, and to some extent, it pays more attention to insights.Lin cites the respective features of the bagging and decision tree respectively:The Random forest is the combination of the two.1) Ease of parallelism2) retain the advantages of CRT3) weakened the shortcomings of fully-grown tree by means of baggingA insights is mentioned here: if the diversity of each classifier is larger, the effect may be better

a new directoryMkdir directory nameFor example, create a backup directory backup under the driver directory.Mkdir/system/library/extensions/backupCreate a backup directory backup on the desktopMkdir/user name/desktop/backup Copy an objectCP parameter source file target fileFor example, you want to copy the natit. kext file on the desktop to the driver directory.CP-r/user name/desktop/natit. kext/system/library/extensionsThe R parameter indicates recursive operation on the directory. kext looks

alias,# Mybuild: compile or update pash# Mypash: Run pash# Powershell missionary original may be reprinted, but the name and source must be retained; otherwise, legal liability shall be held.Echo "alias mybuild = 'CD/; rm-rf/Pash; git clone https://github.com/Pash-Project/Pash.git; cd/Pash/;/opt/mono/bin/xbuild/Pash. proj' ">/root /. bashrcEcho "alias mypash = '/opt/mono/bin/mono/Pash/Source/PashConsole/bin/Debug/Pash.exe'">/root/. bashrc # Install p

example, think of a loop in the driver directory. Cd/System/Library/Extensions 　Create a new directory Mkdir directory name For example, create a backup directory backup under the driver directory. Mkdir/System/Library/Extensions/backup Create a backup directory backup on the desktop Mkdir/User name/Desktop/backup Copy an object Cp parameter source file target file For example, you want to copy the Natit. kext file on the desktop to the driver directory. Cp-R/User name/Desktop/Natit. kext/Syste

In general, our common antenna tests in engineering practice are divided into the following types: Near-Field Test In the near-field antenna test, the distance from the test probe to the plane of the tested antenna port is about 3 λ 5 λ. In this case, the antenna test is near-field test.The near-field antenna testing system consists of the following parts:1. multi-axis scanning frame subsystem (including control drives and cable components ).2. The antenna positioning subsystem under test us

that enables spatial diversity and spatial multiplexing for respectively increasing the range and data transmission rate. in addition, 802.11n allows use of wider 40 MHz channels to double the bandwidth as compared to the legacy 20 MHz operation. 802.11n uses frame aggregation and block acknowledgements for improving the throughput efficiency. Q. My legacy (802.11a/B/g) AP already has two antennas. isn' t it capable of MIMO?MIMO is not just about having multiple antennas but about having multip

, equivalent to the type length in the database Public Employee (string name, int age ){If (name. getbytes (). length> = Len ){This. Name = Name. substring (0, Len );} Else {While (name. getbytes (). Length Name + = "/u0000"; // blank, occupies 8b}This. Name = Name;}This. Age = age;}Public String getname (){Return name;}Public int getage (){Return age;}}I create several objects for storage:Public class testrandomaccessfile {Public static void main (string [] ARGs) throws exception { Employee e1