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Translate the "Tools" section

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Ilya Shpigor
2020-12-15 21:26:11 +01:00
parent c3a4382bee
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@ -66,4 +66,28 @@ These are the steps to launch Bash on macOS:
2. The dialog box appears. Enter the text "Terminal" there.
3. The list of applications opens. Click on the first line with the name "Terminal" there.
3. The list of applications opens. Click on the first line with the name "Terminal" there.
### Terminal emulator
When you launch the application `msys2.exe`, the terminal emulator window opens. An [**emulator**](https://en.wikipedia.org/wiki/Emulator) is a program that simulates the behavior of another program, OS or device. Emulators are used for compatibility. For example, you want to run a Windows program on Linux. To do this, install an emulator of the Windows environment on Linux. It is called [Wine](https://en.wikipedia.org/wiki/Wine_(software)). Wine provides its own version of the Windows system libraries. Thanks to the emulator, you can run the Windows program on Linux.
The terminal emulator solves the compatibility problem. Command-line programs are designed to work through a terminal device. Today, nobody uses terminals. Personal computers and laptops have replaced them. To run a program that works only with the terminal, you need a terminal emulator. It sends the program's commands to the shell and displays the results on the screen.
Figure 2-5 shows the interaction between input/output devices, the terminal emulator, the shell and the command-line program.
{caption: "Figure 2-5. The workflow of the terminal emulator", height: "25%"}
![Terminal Emulator](images/BashShell/terminal-emulator.png)
There are two lines in the terminal window after startup (see Figure 2-4):
{line-numbers: false}
```
ilya.shpigor@DESKTOP-1NBVQM4 MSYS ~
$
```
The first line starts with the username. In my case, it equals `ilya.shpigor`. Then there is the computer name `DESKTOP-1NBVQM4` after the symbol @. You can change this name via Windows settings. The word `MSYS` comes next. It means the name of the platform where Bash is running. At the end of the line, there is the symbol ~. It is the **absolute path** to the current directory. Let's pay attention to this point.
There are two types of paths to file system objects: absolute and relative. The address bar of Windows Explorer shows the paths of the first type. An absolute path is a path to the same file system object regardless of the current directory. **Relative path** specifies the path concerning the current directory.
Relative paths are shorter than absolute paths. That is why they are faster to type and easier to use in shells. There is a simple rule to distinguish the type of paths in the Unix environment. Absolute paths start with a slash /. For example, `/c/Windows/system32`. Relative paths start with a directory name. For example, `Windows/system32`.

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@ -6,4 +6,5 @@ mainmatter:
GeneralInformation/operating-system.md
GeneralInformation/application.md
BashShell/README.md
BashShell/README.md
BashShell/tools.md