Tag Archives: console

Friday Fun: Size Me Up

Part of day job involves creating training material, often in the form of video training for Pluralsight or articles for Petri.com. Since I usually am covering PowerShell I often need to capture a PowerShell session. And sometimes I want the screen to be a particular size. So over time I’ve created a few PowerShell tools to resize console and application windows. The PowerShell console window stores its dimension under $host.ui.rawui.windowsize.

These are the same settings you would see here:

As long as you use a value less than the buffer dimensions, you can modify the console window from a prompt. But it takes a step you might not realize. You can’t do this:

Instead, you can create a new type of object with your intended dimensions.

Then you can use this object as a value for the WindowSize property.

Naturally, I created a function to do this for me.

My function also includes code to support –WhatIf.

Of course now that I’ve shown you that I have an alternative. You can use the .NET class [System.Console] which has properties for width and height. And you can set these values independently.

You can’t discover this unless you know something of the .NET Framework, but you could have discovered $host which is why I showed you that first. Since I often need to record video at 1280×720 dimensions, I wrote a quick and dirty script to set my PowerShell console window to those dimensions.

Everything I’ve shown you so far is for the PowerShell console. But what about the ISE? You can’t use the techniques I’ve covered. Application windows are bit more complicated and I’m not going to go into the details. But I came across some code on GitHub (https://gist.github.com/coldnebo/1148334). I don’t do Minecraft but it didn’t take much to turn it into a re-usable function.

The code supports –WhatIf and defaults to the current application, which is presumably the PowerShell ISE.

But this is what actually gets set.

So if you wanted to include the title bar you would need to adjust accordingly.

All of this may not really be applicable to your work, but if you find a good use I hope you’ll let me know. Have a great weekend.

PowerShell Console Graphing Revised

Many of you have been having fun with my PowerShell Console Graphing tool I posted the other day. But I felt the need to make one more major tweak. I wanted to have the option for conditional formatting. That is, display graphed entries with high values in one color, medium in another and low in yet another.

The default behavior is still to use a single color. But using ParameterSets I added some new parameters, -HighColor, -MediumColor and -LowColor. They are all mandatory so if you use one parameter you have to define them all.

I also moved the Property parameter and made it positional which should make it easier to use. The conditional coloring works basically by taking the largest possible graph value, which is based on available screen width and dividing it into thirds. The top third is considered high, second third is medium and last third is low.

When it comes time to graph, I check which parameter set we’re using and set the graph color accordingly.

But now I can run a command like this:

out-consolegraph-3

What do you think? Download Out-ConsoleGraph-v2.

UPDATE: A newer version is available at http://jdhitsolutions.com/blog/2013/12/updated-console-graphing-in-powershell/

Graphing with the PowerShell Console

I’ve written before about using the PowerShell console as a graphing tool, primarily using Write-Host. Most of what I’ve published before were really proof of concept. I decided to try and come up with a more formal and re-usable tool that could create a horizontal bar graph based on a numeric property from piped objects. For example, I wanted to get all processes and display a graph of the WorkingSet for each object. My result is an advanced function that should work in v2 or v3 called Out-ConsoleGraph.

Here’s the code, minus, the comment-based help. I’ve commented the quote quite a bit so I won’t spend a lot of time explaining it in detail.

The function requires that PowerShell be running in STA mode, which shouldn’t really be an issue. The intent is that you will be piping objects to the function. You need to specify a property that you want to graph and an object property to use as the label or caption for each object. The default caption is the Name property which seems pretty common. The property you are graphing must have a numeric value. The function’s premise is to get the window width, then write the caption and a graph figure using the remaining available width. The function has a bit of code to calculate the longest caption value so that everything lines up and then determines how much space remains for graphing.

The graph is really more of a proportional representation as opposed to actual value. In short, I find the largest property value which essentially becomes the 100% mark. All other values are calculated as percentages and graphed accordingly. This might be easier to understand if you see it in action.

This is getting all non-Microsoft processes and creating a graph of the WorkingSet property.

out-consolegraph-1

The graph title and color are customizable via parameters. This should work for any type of object as long as you can have a numeric property.

out-consolegraph-2

This command will work in the PowerShell ISE but I think it works better in the PowerShell console. Remember, this command is NOT writing to the pipeline so all you can do is view the output.

Download Out-ConsoleGraph and let me know what you think.