More Efficient PowerShell with PSReadline — Part 6

Posted on September 25, 2017 by Jeff Hicks in Uncategorized with

We have been spending a ton of time on the great stuff that is in the PSReadline module, which is now a default part of PowerShell. If you are just jumping in, take some time to get caught up on past articles or you will be a little lost.

 

 

Even though the module has been around for awhile, I never paid it much attention. Now that I have dug into it, I can see some terrific value. I think it will make my time at a PowerShell prompt more efficient and enjoyable. I spend most of my day with a PowerShell session running and other than a web browser and email, it is where I am most likely working. I thought I would share some of the things I am using with PSReadline. Some of these are drawn from the sample profile script I mentioned last time. But I have made a few modifications.

Graphical Command History

We already know that PSReadline maintains a historical record outside of PowerShell. You may also recall that in previous versions of PowerShell (and Windows) you used to be able to press F7 to get a graphical popup of recent commands. This was actually the command buffer from the CMD window that was running PowerShell. Regardless, I have a key handler assigned to F7 that uses Out-Gridview to display command history.

My version filters out duplicates. When I press F7 I get something like this:

My F7 Handler (Image Credit: Jeff Hicks)

My F7 Handler (Image Credit: Jeff Hicks)

If I select a command and press OK, the command is inserted at my prompt where I can modify and run it. Or if I type a string like ‘process’ and then press F7, the handler script block will filter commands that match the pattern.

Filtered history by pattern (Image Credit: Jeff Hicks)

Filtered History by Pattern (Image Credit: Jeff Hicks)

Now, I have an easy way to find a previous command.

 

Jump Lists

The other set of handlers I am getting a ton of use from are those that provide “jump list” functionality. With a jump list, I can assign a keyboard marker or shortcut to a directory. I can then invoke the shortcut to rapidly change to that folder. For example, with my PSReadline tools, I can change to a folder like C:\scripts. I then press Ctrl+Alt+J and press the keyboard shortcut I want to assign such as ‘s’. It can be any single keyboard character. I can repeat the process for any folder I am likely to use throughout the day. The data is stored in a hashtable. I also wrote a handler for Alt+J that displays my current assignments in a popup.

My Jump List (Image Credit: Jeff Hicks)

My Jump List (Image Credit: Jeff Hicks)

 

To jump to any directory, I press Ctrl+J and the shortcut key. With this, I can very quickly jump between frequently used directories. Because I want to always have these handlers, I use this code in my PowerShell profile script.

I am pre-populating the hashtable with some values I know I always want but you don’t have to. The bottom line, at least for me, is that PSReadline helps me work much smarter and more efficiently. Anything that saves a few keystrokes here and there or eliminates an error-prone activity like typing (!) is worth my time to learn and leverage.

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I hope you found this series interesting. If you are doing anything fun and interesting with PSReadline I would love to hear about it.

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