administrator s operating system account
The linux system administrator's guide
... is also important for system administrators After all, a system administrator is just a user with special privileges and duties Very useful resources are the manual pages, which should always ... with MS−DOS (and OS/2 and Windows NT) FAT filesystems umsdos Extends the msdos filesystem driver under Linux to get long filenames, owners, permissions, links, and device files This allows a normal ... filesystem sysv SystemV/386, Coherent, and Xenix filesystems NTFS The most advanced Microsoft journaled filesystem providing faster file access and stability over previous Microsoft filesystems The...
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Linux Mint System Administrator''''s Beginner''''s Guide docx
... learning about Linux system administration You should be familiar with Linux-based operating systems and the basic concepts such as directories, files, commands, and processes Users who have experimented ... creating shell scripts, and organizing users into groups Linux Mint System Administrator' s Beginner 's Guide offers a set of practical recipes to become a Linux system administrator With this book, ... Monitoring Your System 105 Processes and services Starting and stopping services Time for action – stopping and starting an SSH daemon Activating services Time for action – activating Samba Listing the...
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UNIX Unleashed, System Administrator''''s Edition phần 1 pps
... categories of UNIX systems on Intel hardware: the SVR4-based systems and the older, more established SVR3.2 systems SVR4 vendors include NCR, IBM, Sequent, SunSoft (which sells Solaris for Intel), ... common shells on various UNIX operating systems The most common are as follows: sh ksh sh csh bash tcsh The Bourne shell is the most common of all the shells (May be installed as bsh.) The Korn shell ... Formats This section contains information on the file formats of system files, such as init, group, and passwd This is useful for system administrators File Formats This section contains information...
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UNIX Unleashed, System Administrator''''s Edition phần 2 ppt
... This is the sixth line This is the seventh line This is the eighth line This is the ninth line more This This This This This This This This This file2 is the is the is the is the is the is the ... second file seventh line eighth line ninth line more This This This This This This This This This This file3 is the is the is the is the is the is the is the is the is the is the first line second ... host is testuser, this command will assume that the user name on the remote host is testuser If the user name testuser does not exist on the remote host and you must use the user name newtestuser...
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UNIX Unleashed, System Administrator''''s Edition phần 3 potx
... used as a quick message summary, noting who sent the message and when Because many mail systems store all of a user 's mail messages in a single text file, such summary lines are also used to separate ... as to how subscriptions are handled Generally, the address to send messages to for a mailing list is this: listname@domain The address to send messages to for subscribing and un-subscribing is ... new messages, and leave replies Now imagine having 20,000 mailboxes This is analogous to how USENET works USENET is a huge public messaging system It is divided into thousands of discussions of...
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UNIX Unleashed, System Administrator''''s Edition phần 4 docx
... ESC * ESC = ESC n ESC n ESC n ESC n ESC n ESC n ESC n ESC n ESC n ESC n ESC n ESC n ESC n ESC < ESC > ESC ESC ESC _ ESC Ctrl+? ESC Ctrl+? ESC letter Ctrl+] c Ctrl+A Ctrl+B Ctrl+B ESC b ESC b ... does not need to be created Syntax Bash supports a syntax similar to sh and ksh Variables Bash 2.0 supports both scalar and array variables To set variables in bash, a standard sh assignment statement ... login posix Using Bash as the Login Shell The most common way to change the login shell is to use the change shell command, chsh On some systems where chsh is not available, passwd -s or passwd -e...
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UNIX Unleashed, System Administrator''''s Edition phần 5 pptx
... (status messages, debug messages, and header lines, for example) often is desired As a result, shell scripts should have an option for more or less verbosity The alias vprint (short for verbose ... numbers This can be useful for creating scripts based on past input (history -h > script.csh) or for cutting and pasting a series of commands by using your mouse Using History Substitutions to ... otherwise, the expression evaluates to Assignment Operators: Evaluating Expressions and Assigning the Results to Variables You can use the @ command to evaluate an expression and assign the result...
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UNIX Unleashed, System Administrator''''s Edition phần 6 ppsx
... identifies which set of systems this system is grouped with for systems administration purposes The set of systems shares a common password and other systems administration files This chapter deals ... bin sys adm uucp lp nobody Used by system server processes Owns executable user command files Owns system files Owns accounting files Used by UUCP Used by lp or lpd subsystems Used by NFS There ... A system that is heavily loaded delays the response of disk block requests for its clients To keep response time up for the clients, leave your power users on the faster systems and use a system...
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UNIX Unleashed, System Administrator''''s Edition phần 7 pps
... Systems) and AFS (Andrews File System) This option can be omitted if NFS is the only distributed file system which your system supports specifies restrictions that apply to the exported filesystem ... is cleverly designed to present remote resources to users as extensions to the local resources NFS follows the client-server model, where the server is the system which owns the filesystem resource ... interfaces and services that are necessary to mount (using Network File System - that is, NFS) these resources Here is the code listing for this script: #!/sbin/sh # Make sure that the libraries essential...
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UNIX Unleashed, System Administrator''''s Edition phần 8 potx
... segment size (MSGSSZ) 400 system message headers (MSGTQL) 1024 message segments (MSGSEG) SYS system class name (SYS_NAME) As stated earlier, over the years there have been many enhancements that ... spray and instead use nfsstat -c The -c option specifies the client statistics, and -s can be used for server statistics As the name implies, client statistics summarize this system 's use of another ... class Address of process CPU time used Process ID User ID Priority Memory used Using ps provides you a snapshot of the system 's active processes It is used in conjunction with other commands throughout...
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The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System
... another vm_regions(task, address, size, elements, elements_count) Return a description of this task s address space vm_statistics(task, vm_stats) Return statistics about this task s use of virtual memory ... through the use of tasks and threads A task is the basic unit of resource allocation It includes a paged virtual address space and protected access to system resources such as processors and communication ... Multiprocessor Issues As faster networks and more loosely connected multiprocessors are built, the distinctions between the use of shared memory and message passing as communication mechanisms are...
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Tổng quan về Operating System
... S Tanenbaum, Modern Operating Systems Second Edition Prentice Hall 2001 [3] Silberschatz et al, Operating System Concepts”, 6th Ed., 2002 [4] Silberschatz et al, Operating System Principles”, ... học tập [1] Silberschatz, Galvin, Gagne, Operating System Concepts Seventh Edition John Wiley & Sons, Inc 2005 Tài liệu tham khảo [1] Ugur Halici, Operating Systems, Ankara s University, 2003 ... nhau, với MS_DOS trỏ lệnh dấu nhắc hệ điều hành (C:\>_), với Windows 9x nút Start\Run Tập tin Command.Com Shell MS_DOS 1.22 Một s khái niệm hệ điều hành(tt) S phân lớp hệ thống (System Layering)...
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Operating system
... the phrases in box Software System software Operating system Application software Reading Read the text below and find MS - DOS OS/2Wrap Microsoft window UNIX Pocket PC Linux Mac OS Solaries Language ... Hacking Workstation Software Language work B These sentences contain typical errors Correct them We are having terrivel weather Can you give me some advice? I need some information The news was very ... kh«ng cã d¹ng s nhiÒu E.g: Information, storage Language work A Divide some common nouns in computing into countable and uncountable nouns Countable nouns Uncountable nouns Robotics Window Program...
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Programming the Be Operating System-Chapter 9: Messages and Threads
... Book defines all the system messages In short, system messages fall into the following categories: Application system messages Such a message concerns the application itself, and is delivered ... messages, a quick review of system messages will minimize confusion between how these different types of messages are handled System message handling When an application receives a system message, ... MY_APP_DEFINED_MSG 'mymg' class MyAppClass : public BApplication { public: virtual void MyAppClass(); MessageReceived(BMessage* message); }; void MyAppClass::MessageReceived(BMessage* message) { switch (message->what)...
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MySQL Administrator''''s Bible- P15
... the session server status in mysqld The SHOW SESSION STATUS command contains the same information as the SESSION_STATUS system view, using similar field names: ■ VARIABLE_NAME — The name of the session ... session system variable Variable_name in SHOW SESSION STATUS is equivalent ■ VARIABLE_VALUE — The value of the session system variable Variable_name in SHOW SESSION STATUS is equivalent Displaying ... contains information about the session server variables in mysqld The SHOW SESSION VARIABLES command contains the same information as the SESSION_VARIABLES system view, using similar field names:...
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PHẦN 2: HỆ ĐIỀU HÀNH (OPERATING SYSTEM)
... PMT S0 (1) PMT S1 13 17 (2) PMT S2 SMT P2 P2 S0 S1 1 200K 500K 10 20 15 22 (0) PMT S0 (0) (1) 12 (1) PMT S1 11 16 18 19 P1 /s0 /0 P1 /s2 /1 P1 /s0 /1 P2 /s0 /0 P1 /s1 /1 P1 /s1 /0 P1 /s0 /2 P2 /s1 /4 P1 /s2 /0 ... nghĩa Semaphore Thiết kế hàm Signal() Wait() Tái cấu trúc lại miền điểm Găng Semaphore Đáp án ĐN : Semaphore S số nguyên không âm S bị thay đổi hàm Signal (S) =S+ 1 S- 1; S> 0 Wait (S) = Chờ ; S= 0 Trong ... JT 0K P2 /S2 900K 37000 (địa SMT) 1000K 42000 200K P1 /S1 P1 SMT P1 500K S0 200K 200K 700K 300K 200K S1 300K 700K 400K 1900K P1 /S0 P2 /S0 S2 400K 900K 1000K 1100K P2 /S3 P2 S0 100K S1 400K SMT P2 100K...
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Programming the Be Operating System-Chapter 10: Files
... and Save Panels 369 void MyHelloWindow::MessageReceived(BMessage* message) { switch(message->what) { case MENU_FILE_SAVEAS_MSG: fSavePanel->Show(); break; case B_SAVE_REQUESTED: Save(message); ... file panel is dismissed, the system sends a B_SAVE_REQUESTED message to the affected application This message is directed to the MessageReceived() function of the Save file panel s target Recall ... Show() void MyHelloWindow::MessageReceived(BMessage* message) { switch(message->what) { case MENU_FILE_SAVEAS_MSG: fSavePanel->Show(); break; default: BWindow::MessageReceived(message); } } Saving...
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MySQL Administrator''''s Bible- P16
... based on tables/databases/columns accessed ■ To share data ■ Analyze queries and gather statistics MySQL Proxy is an open source tool that is simple and powerful; Sun Microsystems, Inc is using ... Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: Master_SSL_Verify_Server_Cert: Last_IO_Errno: Last_IO_Error: ’master_user@192.168.1.1:3306’ Last_SQL_Errno: Last_SQL_Error: ... system view for the current session If the function that stores the row is successful, status gets a value of If there was an error, status gets a value of status is returned on line 33, thus...
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MySQL Administrator''''s Bible- P17
... TK_SQL_RIGHT TK_SQL_RLIKE TK_SQL_SCHEMA TK_SQL_SCHEMAS TK_SQL_SECOND_MICROSECOND TK_SQL_SELECT TK_SQL_SENSITIVE TK_SQL_SEPARATOR TK_SQL_SET TK_SQL_SHOW TK_SQL_SMALLINT TK_SQL_SPATIAL TK_SQL_SPECIFIC ... storage systems such as SANs ■ SQL Standards — Over 10 forums devoted to SQL such as Transactions, Constraints, Cursors, Events, Stored Procedures, UDFs, and character sets ■ MySQL Technology ... DATABASE() SESSION_USER() Yes Returns the username and hostname of the current connection Equivalent to USER() and SYSTEM_ USER() SLEEP(num) No Sleep for num seconds Returns a result set of SYSTEM_ USER()...
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Oracle Database Administrator''''s Guide
... CONNECT SYSTEM/ system_password DB_NAME = database_name UPPERCASE Uppercase typeface indicates elements supplied by the system We show these terms in uppercase in order to distinguish them from terms ... identifiers, as well as user-supplied database objects and structures, column names, packages and classes, usernames and roles, program units, and parameter values Enter sqlplus to open SQL*Plus UPPERCASE ... Database Administrator Security and Privileges The Database Administrator' s Operating System Account Database Administrator Usernames Database Administrator Authentication...
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