asp.net reading barcode User Accounts in Software

Printing QR Code 2d barcode in Software User Accounts

User Accounts
QR Code JIS X 0510 Reader In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
QR Code Maker In None
Using Barcode creator for Software Control to generate, create QR Code image in Software applications.
You never directly access a Linux system. Instead, Linux sets up an interface called a shell through which you can interact. A Linux system can actually set up and operate several user shells at once, accommodating several users simultaneously. In fact, you can have many users working off the same computer running a Linux system. Each particular user appears to be the only one working on the system, as if Linux can set up several virtual computers and each user can then work on his or her own virtual computer. Such virtual computers are actually individually managed interfaces whereby each user interacts with the Linux system. These user shells are frequently referred to as accounts. UNIX, which Linux is based on, was first used on large minicomputers and mainframes that could accommodate hundreds of users at the same time. Using one of many terminals connected to the computer, users could log into the UNIX system using their login names and passwords. All of this activity was managed by system administrators. To gain access to the system, you needed to have a user account set up for you. This was commonly known as "opening an account." A system administrator created the account on the UNIX system, assigning a login name and password for it. You then used your account to log in and use the system.
QR Code 2d Barcode Reader In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Quick Response Code Maker In Visual C#.NET
Using Barcode generation for VS .NET Control to generate, create QR-Code image in VS .NET applications.
Each account is identified by a login name with access protected by a password. Of course, you can access any account if you know its login name and password. On your Linux system, you can create several accounts, logging into different ones as you choose. Other people can access your Linux system, making use of login names and passwords you provide for them. They have their own accounts on your system. Recall that in the previous chapter on installing Linux, you created a login name and password for yourself. These are what you use to access Linux regularly. When you created the login name and password, you were actually creating a new user account for yourself. Note You can, in fact, create other new user accounts using special system administration tools. These tools become available to you when you log in as the root user. The root user is a special user account reserved for system administration tasks, such as creating users and installing new software. Basic system administration operations are discussed briefly in 5, but they are discussed in detail in s 29-39. For now, you only need your regular login name and password.
Make Quick Response Code In Visual Studio .NET
Using Barcode generator for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications.
Painting QR Code JIS X 0510 In VS .NET
Using Barcode creator for .NET framework Control to generate, create Denso QR Bar Code image in Visual Studio .NET applications.
Accessing Your Linux System
QR Code JIS X 0510 Generation In Visual Basic .NET
Using Barcode printer for Visual Studio .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
Make ECC200 In None
Using Barcode printer for Software Control to generate, create ECC200 image in Software applications.
To access and use your Linux system, you must carefully follow required startup and shutdown procedures. You do not simply turn off and turn on your computer. If you have installed a boot loader, either GRUB or LILO, when you turn on or reset your computer, the boot loader first decides what operating system to load and run. GRUB will display a menu of operating systems to choose, whereas LILO will display a command-line prompt, as shown here:
Encode Bar Code In None
Using Barcode maker for Software Control to generate, create barcode image in Software applications.
Painting EAN 13 In None
Using Barcode creation for Software Control to generate, create GTIN - 13 image in Software applications.
LILO: linux
Create UPC-A In None
Using Barcode generator for Software Control to generate, create UPC Code image in Software applications.
Code 128 Creator In None
Using Barcode encoder for Software Control to generate, create Code 128 image in Software applications.
If, instead, you wait a moment or press the ENTER key, the boot loader loads the default operating system. (Recall that earlier you designated a default operating system.) If there is a Windows system listed, you can choose to run that instead. You can think of your Linux operating system as operating on two different levels, one running on top of the other. The first level is when you start your Linux system, and the system loads and runs. It has control of your computer and all its peripherals. You still are not able to interact with it, however. After Linux starts, it displays a login prompt, waiting for a user to come along and log into the system to start using it. To gain access to Linux, you have to log in first. You can think of logging in and using Linux as the next level. Now you can issue commands instructing Linux to perform tasks. You can use utilities and programs such as editors or compilers, or even games. Depending on a choice you made during installation, however, you may either be interacting with the system using a simple command line interface or using the desktop directly. There are both command line login prompts and graphical login windows. In the case of most Linux distributions such as Red Hat, if you choose to use a graphical interface at the end of the installation, you are presented with a graphical login window at which you enter your login and password. If you choose not to use the graphical interface, you are presented with a simple command line prompt to enter your login name.
Postnet 3 Of 5 Drawer In None
Using Barcode creator for Software Control to generate, create Postnet 3 of 5 image in Software applications.
Barcode Printer In None
Using Barcode generator for Font Control to generate, create barcode image in Font applications.
UPCA Drawer In None
Using Barcode creator for Microsoft Excel Control to generate, create UPC-A image in Office Excel applications.
Code 128 Code Set C Creator In Java
Using Barcode creation for Eclipse BIRT Control to generate, create USS Code 128 image in BIRT applications.
GTIN - 13 Maker In Objective-C
Using Barcode drawer for iPad Control to generate, create EAN-13 image in iPad applications.
Making Code 39 In Objective-C
Using Barcode generator for iPhone Control to generate, create Code 3 of 9 image in iPhone applications.
UPC-A Supplement 5 Decoder In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Encoding Matrix 2D Barcode In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create 2D Barcode image in ASP.NET applications.
Copyright © OnBarcode.com . All rights reserved.