oracle linux commands

Recommend a Windows software: Everything, can quickly search to file1. File Search command: FindDo not use the Find,find range as small as possible during peak server usagefind [Range] [match condition]Example:Find/etc-name init: Find file init in directory/etc, precision search, to blur search with * matchFind/-size +204800: Look for files larger than 100M in the root directoryFind/home-user Shenchao: Find files with owner Shenchao under the root directoryFind/etc-cmin-5: Find files and directo

, for renaming8. Delete Files: RMRM-RF [File or directory]:-R Remove Directory-F EnforcementDelete the directory with-RF, or you will be constantly prompted to delete every file in the directory9. Create an empty file: TouchTouch japanlove.list10. Display file contents: Cat [FileName]-N: Show line numbers11. Display file contents: TAC [FileName]12. Paging Displays the contents of the file: more [filename](space) or F: Page turn(Enter): line breakQ or Q: Exit13. Paging Displays the contents of th

[user] [file or directory]Function Description: Change the owner of the file or directory (only root has this permission)Command name: CHGRPCommand English Original: Change file group ownershipCommand path:/BIN/CHGRPExecute Permissions: All UsersSyntax: chgrp [user Group] [file or directory]Function Description: Change the file or directory belongs to group example: Chgrp liming FengjieCommand name: umaskCommand English original: the User file-creation maskCommand path: Shell built-in commandEx

46.1 Mkfontdir: Creating an index of X font files 46.2 Dumpiso: Dumps the IEEE 1394 synchronous channel packets 46.3 iconv: Convert file Encoding 46.4 Hash: Display and delete hash tables 46.5 Isb_release: Displays information about LSB and specific versions 46.6 locale: Get a specific language environment 46.7 nm: List Symbols from objects 46.8 RMT: Remote disk Creation Protocol module 46.9 Lscgroup: List all the cgroups 46.10 cgclear: Uninstalling the Cgroup file sys

. After reading all the content, you will exit. If you want to quit early, just press the Q key. Less is the same as more, but better than the more good can be turned upside down. The SPACEBAR can also be paged, while pressing the "J" key can be moved downward (click to move down one line) and press "K" key to move up. When you use more and less to view a file, you can click the "/" key and then enter a word carriage return so that you can find the word. If you have more than one word, you can p

Detailed explanation of linux sed commands and sed commandsIntroduction Sed is an online editor that processes a row of content at a time. During processing, the currently processed rows are stored in the temporary buffer, called the pattern space. Then, the sed command is used to process the content in the buffer, send the buffer content to the screen. Next, process the next row, and repeat until the end o

directory cannot be deleted because the TMP directory has other files in addition to the 123 directory, and the directory/123/456/789,/123/456,/123 have been deleted.Four, RM commandRM commands can be used to delete files and directoriesFor example, I first create a directoryMkdir-p/tmp/123/456/789And then create a textTouch/tmp/123/456/789/123.txtPerformRm/tmp/123/456/789/123.txtWill ask whether to delete the normal empty file/tmp/123/456/789/123.tx

Common Oracle commands and recently used Problems [Problem and background]1. delete a table? A library?Drop table table_name;Drop table database_name;2. Delete all data of a user?It is best to stop the database first and shutdown immediate; startup to ensure no user connectionOr select Sid, serial # from V $ session where username = // 'username // '; query the connectionSid serial #--------------

Common Linux commands (version 2)-file search commandsFile SEARCH Command 1. which/usr/bin/which # displays the directory where the system command is located. It is an absolute directory and cannot find files. Format: which [system command] E.g. which ls Appendix-whereis: You can also find the absolute path of the command. Unlike whereis, which lists the alias records of this command, and whereis displays t

7 days (the system will warn the user within 7 days before password expires), modified with the-W parameter-1: Account Expiration Date (-1 means never expire), modified with-I parameterInvalidate the Account 　　Sometimes we may need to let an account temporarily unable to log in to the host, then we just use the passwd-l parameter is ok (Restore the original with-u parameter)Example 5, make the account JBW invalid, check it out and then restore it to the original state:1[Email protected]:~

(mm/dd/yy format) %T Display time format, 24-hour (HH:MM:SS) %x Format of the display date (MM/DD/YY) %y The last two digits of the year %Y Years (e.g. 2007, 2008) %r Time (Hh:mm:ss morning or afternoon) %p Show morning or afternoon If you enter a command:Date "+%x,%r"The system returns the following information:March 26, 2010, 18:06 P.M. 49 seconds4.7 cal CommandThe CAL co