linux commands for hadoop administration

machineShutdown-r 关机重启-h 关机不重启now 立刻关机Halt shut down the machineReboot restartLinux PipelinesUse the standard output of one command as the standard input for another command. That is, the combination of several commands to use, the latter command in addition to the results of a previous command.Example: Grep-r "Close"/home/* | More in the home directory to find all files, including close files, and paging output.Linux

privileges)3, the composition of the orderCommand parameter target-S represents the abbreviation for a word--size represents the whole wordThree, virtual machine management commands通常使用虚拟机进行操作，防止不小心删除linux的重要文件，在虚拟机里面可以随便操作，如果出现问题只需重置虚拟机即可，非常方便。 1、rht-vmctl start desktop \server 开启2、rht-vmctl poweroff desktop\server 关闭 3、rht-vmctl view desktop \ server 显示Mouse click Not liste

decompress, just replace the above command TAR-CVF/TAR-ZCVF/TAR-JCVF "C" in the "X".Shut down/Restart the machineShutdown-R shutdown Restart-H shutdown does not restartNow turn the machine off.Halt shut down the machineReboot restartLinux PipelinesUse the standard output of one command as the standard input for another command. That is, the combination of several commands to use, the latter command in addition to the results of a previous command.Exa

/etc/group Storage Group Account/etc/shadow Store password for user account/etc/gshadow Password to store user group accountUseradd User NameUserdel User NameAddUser User NameGroupadd Group NameGroupdel Group Namepasswd root sets the password for rootSu RootSu-root/etc/profile System Environment variablesBash_profile User Environment variables. BASHRC User Environment variablesSU user switches the user and loads the configuration file. bashrcSu-user switch User, load configuration file/etc/profi

document press N to jump to the next, Shift+n previousYYP Copy the cursor line, and pasteH (move left one character ←), J (next line ↓), K (previous line ↑), L (move right one character →)User and User group management/etc/passwd Storing user accounts/etc/group Storage Group Account/etc/shadow Store password for user account/etc/gshadow Password to store user group accountUseradd User NameUserdel User NameAddUser User NameGroupadd Group NameGroupdel Group Namepasswd root sets the password for r

course, if you want to decompress, just replace the above command TAR-CVF/TAR-ZCVF/TAR-JCVF "C" in the "X".Shut down/Restart the machineShutdown-R shutdown Restart-H shutdown does not restartNow turn the machine off.Halt shut down the machineReboot restartLinux PipelinesUse the standard output of one command as the standard input for another command. That is, the combination of several commands to use, the latter command in addition to the results of

1. Linux system directory / : root directory /bin : command to execute files under Linux, which is equivalent to exe execution files under Windows Extensions:Big Data Framework-software-install/Unpack compressed Packages-bin folder /sbin : admin command, root user use Extensions:Big Data Framework-software-install/Unpack compressed Packages-Sbin folder / etc : Store

decompress, just replace the above command TAR-CVF/TAR-ZCVF/TAR-JCVF "C" in the "X".Shut down/Restart the machineShutdown-R shutdown Restart-H shutdown does not restartNow turn the machine off.Halt shut down the machineReboot restartLinux PipelinesUse the standard output of one command as the standard input for another command. That is, the combination of several commands to use, the latter command in addition to the results of a previous command.Exa

decompress, just replace the above command TAR-CVF/TAR-ZCVF/TAR-JCVF "C" in the "X".Shut down/Restart the machineShutdown-R shutdown Restart-H shutdown does not restartNow turn the machine off.Halt shut down the machineReboot restartLinux PipelinesUse the standard output of one command as the standard input for another command. That is, the combination of several commands to use, the latter command in addition to the results of a previous command.Exa

decompress, just replace the above command TAR-CVF/TAR-ZCVF/TAR-JCVF "C" in the "X".Shut down/Restart the machineShutdown-R shutdown Restart-H shutdown does not restartNow turn the machine off.Halt shut down the machineReboot restartLinux PipelinesUse the standard output of one command as the standard input for another command. That is, the combination of several commands to use, the latter command in addition to the results of a previous command.Exa

HTPASSWD: Managing User files for Basic authentication Httpd:apache Hypertext Transfer Protocol Server MAILQ: Display message queue to be sent Client tools for Mysql:mysql server Mysqladmin:mysql Server Administration Tool Msqldump:mysql Server Backup tool Mysqlimport:mysql database import Tool Mysqlshow: Display MySQL database, table, and field information Nfsstat: Show Network File system Status SendMail: E-mail delivery agent Showmount:

Displays line numbers: Set Nonumber hidden line number/apache find Apache in the document press N to jump to the next, Shift+n previousYYP Copy the cursor line, and pasteH (move left one character ←), J (next line ↓), K (previous line ↑), L (move right one character →)User and User group management/etc/passwd Storing user accounts/etc/group Storage Group Account/etc/shadow Store password for user account/etc/gshadow Password to store user group accountUseradd User NameUserdel User NameAddUser U

decompress, just replace the above command TAR-CVF/TAR-ZCVF/TAR-JCVF "C" in the "X".Shut down/Restart the machineShutdown-R shutdown Restart-H shutdown does not restartNow turn the machine off.Halt shut down the machineReboot restartLinux PipelinesUse the standard output of one command as the standard input for another command. That is, the combination of several commands to use, the latter command in addition to the results of a previous command.Exa