oracle linux commands

File Management CommandsNot recommended: Follow the book like the Command encyclopedia to learn!The usual commands are about Ten. File naming rules:A) all characters except '/' are legal! b) These characters are best not1, Spacecharacter, tab, BACKSPACE2. Connector3. Special symbol:@#￥$ ()- etC) Avoid use . as a start, use . start with file hidingD) Note: Case sensitive, similar to C language, while Windows is not strictly differentiatede)

Priority comparison of aliases, internal commands, external commands, and hash cache tables in Linux systemsIn our usual use of the Linux system to execute a variety of commands, we will find that the command in the execution process will distinguish between which priority e

In Linux, the grep command is a powerful text search tool that uses regular expressions to search for text and print matching lines. In Linux, the grep command is a powerful text search tool that uses regular expressions to search for text and print matching lines. Grep stands for Global Regular Expression Print, which indicates the Global Regular Expression version. its permission is granted to all users.G

Differences between linux su and sudo commands: linuxsusudo commandsI. Use the su command to temporarily switch user identities1. Conditions and power of su The su command is a tool for switching users. How can this problem be solved? For example, if we log on as a normal user beinan, but want to add a user task and execute useradd, The beinan user does not have this permission, and this permission is exact

Common Linux commands (version 2)-file management commandsFile Management commands Not recommended: Follow books like command book! There are about 200 Common commands. File naming rules: A) All characters except '/' are valid! B) It is best not to use these characters. 1. space character, Tab character, return charact

We use the Accton command to turn process statistics on or off, and if not with any parameters, it means to turn off process statistics. Its main parameters are as follows:(1)-V or--version, indicating that the version information is displayed and exited.(2)-H or--HELP, print help information.In the Linux system to start process statistics must use the Accton command, and must use the root identity to run, the Accton command in the form of Accton file

Common Linux commands (6) -- Network Communication commands 1. command name: writewww.2cto.com execution permission: all users function description: send information to another user, with CTRL + D as the concluding remarks: write lt; user name gt; root sends information to the luxh user [root @ l... Common Linux

Linux screen commands and screen commands I. background The system administrator often needs to remotely log on to the Linux server through SSH or telent, and often runs tasks that take a long time to complete, such as system backup and ftp transmission. Generally, we open a remote terminal window for each of these tas

Summary of commonly used linux commands in ubuntu, and customized tulinux commands I have been in the lab for nearly a month and barely touched windows. I have been developing it in ubuntu. I would like to summarize the commonly used linux commands. (0) su and sudo:Get root

option, because you are worried that if you typo, the directory name will become messy.16. Delete "Empty" directory: RmDir17. Display of files and directories: LS18. Copying Files or directories: CP19. Removal of files or directories: RM20. Moving files and directories, or renaming: MV21, get the path of the file name and directory name: Basename,dirname22, starting from the first line to display the contents of the archive: Cat23. Starting from the last line: TAC (can see that the TAC is backw

In linux, commands such as ifconfig and shutdown cannot use the _ enable Shell command Java code. Why cannot I use the ifconfig command in RedHat Linux 5? After installing RedHat Linux 5, I use some commands on the terminal, for example, ifcinfig checks the IP address of the

name, restart the machine, and then delete it. 6. Introduction of Oracle Management tools: 1.Oracle of the tool software, mainly for the execution of SQL statements and PL/n blocks; How to use: Sql*plus in the Start menu, or SQLPLUSW in the run bar, or Sql*plus Worksheet in the Start menu; 2.sqlplus DOS operation Oracle Tool, its func

Use python to execute linux commands and pythonlinux commands Python version 2.7.12 1. Obtain the execution result of a linux Command. For example, obtain the process tree structure of a PID. the linux Command is pstree-p pid, which can be easily obtained by a module in pyth

The previous article talked about the daily maintenance commands of Linux and the daily maintenance commands of oracle. I believe that Oracle databases must be maintained more or less. Should I import and export Oracle databases?

Install Oracle 11g R2 + RAC + ASM in Oracle Linux 6.4 I. Version descriptionMany articles related to the Internet are found, but they are not very specific. Therefore, the detailed version is used to make the article more practical.This is the RAC environment of Oracle 11g R2 11.2.0.4. The operating system version is

Compress unzip command: gzip (compress file, do not keep original file.) This command cannot compress the directory)Compression decompression command: Gunzip (unzip the. GZ zip file)Compression decompression Command: TAR (package compressed directory or unzip the compressed file. Packaging means to package a directory into a file, not the same as compression. The tar command can be compressed at the same time as the package, resulting in a. tar.gz file)Compression decompression command: ZIP (com

,g=rx,o=rx[[email protected] ~]# mkdir/tmp/test[[email protected] ~]# ls-ld/tmp/tes Tdrwxr-xr-x. 2 root root 4096 January 8 00:32/tmp/test[[email protected] ~]#when creating a new file, the default is no execute permission for security purposes . For example, create a new Test1.txt file under the TMP directory with the following default permissions:[Email protected] ~]# touch/tmp/test1.txt[[email protected] ~]# ls-l/tmp/test1.txt-rw-r--r--. 1 root root 0 January 8 00:34/tmp/test1.txt[[email

Built-in commands and external commands under Linux1, the Linux command can be divided into internal commands and external commands:Internal commands are transferred into memory when the system starts, and are resident in memory, so the execution efficiency is high.The exter

1, the Linux command can be divided into internal commands and external commands:The built-in commands are memory-resident when the system is started, so the execution efficiency is high.The external command is the software function of the system, and the user is required to read the memory from the hard disk.2. Type-display Information about command type#查看当前系统的

This article mainly introduces the method of installing 7z command under Linux, and introduces the use of 7z command. 7z compression format has many advantages, with a very high compression ratio, if you do not understand, see the article: 7z format, LZMA compression algorithm and 7-zip detailed introduction.The Linux distribution used by Reille is Ubuntu and has been validated on Redhat for normal use.1.