TRY IT NOW Get PowerShell, or the ISE, up and running as Administrator. in VB.NET

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TRY IT NOW Get PowerShell, or the ISE, up and running as Administrator.
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If you choose to use the ISE, you ll find yourself looking at three panes within the window, as shown in figure 2.1 (I ve rearranged them from the default to make them a bit easier to see and describe). The only two of these you need to care about for now are the command input pane and the output pane you can ignore the script editor pane (shown on the right). Consider arranging the panes so that only those two are showing you ll find buttons on the right side of the toolbar that let you reconfigure the panes, and the panes themselves can be resized by dragging the separator between them. Experiment with the pane arrangement until you re happy with it.
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The ISE defaults to a three-pane layout including command input, output, and script editing.
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Running commands
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Managing files and folders you know this!
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Let s start with something that you probably already know how to do: manage files and folders from the command line. Forget about PowerShell for a few minutes, and think about your existing command-line experience (if you don t have any, that s okay you ll pick it up pretty quickly). How would you get a listing of files and folders from the current folder
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Right Try the same command in Windows PowerShell and you ll find that it does the same thing, although the output might look a little different than it does in Cmd.exe.
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TRY IT NOW Try running Dir from within PowerShell, right now. I d like you to get into the habit of trying what you re reading about, so that you can start getting your hands-on time with the shell as soon as possible.
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Take a few minutes and see if you can remember the commands needed to use Cmd.exe to accomplish these tasks listed in table 2.1.
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Table 2.1 What commands would you use to complete these tasks in Cmd.exe Task Copy a file to a different location Change directories Move a file to a new location Rename an existing file Create a new directory Remove an empty directory Delete a file Display the contents of a text file Cmd.exe command
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TRY IT NOW Try running some of those same commands in PowerShell, and
you should find that they all work more or less the same way that you re used to. You should have come up with the commands shown in table 2.2.
Table 2.2 Old-style commands for file and folder management Task Copy a file to a different location Change directories Move a file to a new location Rename an existing file Copy Cd Move Ren Cmd.exe command
Accuracy counts
Table 2.2 Old-style commands for file and folder management (continued) Task Create a new directory Remove an empty directory Delete a file Display the contents of a text file MkDir RmDir Del Type Cmd.exe command
If you have some Unix or Linux shell experience, you may have come up with some alternatives, such as Ls for Dir, Cp for Copy, Rm instead of Del, or Cat rather than Type. Those are fine answers, and you ll find that they all work within PowerShell, too. At least, they mostly work. If you tried using extra parameters with some of these commands, you will have realized that these aren t quite the same commands that you re used to. For example, if you tried to run Dir /s to get a listing of files and folders, including subdirectories, then you probably got an error message. That s okay it turns out that this isn t exactly the same Dir command you know and love, but it has the same capabilities. We ll cover that a little later in this chapter.
TRY IT NOW Try running dir /s in Windows PowerShell just to confirm that
it doesn t work. Don t take my word for it! Have you ever piped a long directory listing to more, in order to get a paged result That same trick still works: Dir | More.
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