ccna basic commands

devices, see if the device is recognized4. The identification will list the device number. Input command: adb shell.Note: Show # for root permission, show $ for no root permission5. It is possible to enter a file directory by CD command, the following red box indicates that I have entered into the/data/local directory6. View the file information of the directory, using two methods Ls/ls-al command view, the results show. Ls-al's command is to display all information about the files in the direc

. display the Datanode list $ Bin/hadoop dfsadmin-report 15. Retire Datanode node datanodename $ Bin/hadoop dfsadmin-decommission datanodename 16. The bin/hadoop dfsadmin-help command can list all currently supported commands. For example: *-Report: Reports basic HDFS statistics. Some information can be seen on the NameNode Web Service Homepage. *-Safemode: Generally, this mode is not required. The administ

Basic operating commands for the System 1. root/catanaconda-ks.cfg to determine whether to install base software group Yum groupinstall base can be used to install the base group ifconfig command or use ip addr sh to view IP information. To use YUM, you need to create xxx. repo for the yum installation system. Then install the base group 2. Command Line: use shell to explain the input string to run the p

7. Basic Redis commands-task queue and redis queue1. Advantages: loose coupling is easy to expand, and consumers can expand multiple servers.2. LPUSH RPOP3. The BRPOP command is similar to RPOP. The only difference is that when there are no elements in the list, the BRPOP command will always block the link and know that new elements are added.4. If the value of BRPOP key timeout is 0, the waiting time is no

Setup#配置网络 Mail UserName#查看发送电子邮件 Write UserName#给用户发信息, save end with Ctrl+d Wall message#发广播信息, Wall (that is, write all) ------------------------------------------------------------------------------------------------Help commands Man command or configuration fileHelp command ------------------------------------------------------------------------------------------------Bash common shortcut keys CTRL + C

MantissaParameters-F, the--format= format uses the printf-style floating-point format-S, the--separator= string separates numbers using the specified string (by default: \ n)-W,--equal-width adds 0 before the column to make the same widthExample#显示1-50 integersSEQ 50#以000方式显示9-11 interval integer seq- F "%03g" 9 11#以000方式显示1-100 interval integersSeq-f "%03g" 1 100Children's shoes often meet the question:Question 1:yudanl:~ yuchao$ cd~-bash:cd~: Command not foundQuestion 2:yudan

as passwd) Games and toys (gaming and entertainment) Miscellaneous (Miscellaneous, conventions and agreements, such as Linux file systems, network protocols, ASCII codes; environ global variables) Administrative Commands (administrator commands, such as Ifconfig) Man is searched in the order of chapter numbers in the manual.The man set the following function keys: function

As a DBA, you must learn the following 11 basic Linux commands that will not die: dbalinux Most databases run on Linux and UNIX platforms. As the computing power of the X86 platform approaches or even exceeds that of minicomputers, and with the tide of IOE removal, more and more databases run on the Linux platform. The Linux system is huge and complex. As a DBA, some ba