Many native apps use a REST endpoint to retrieve data. Worse, if the the command is the client side of a client/server app, changes in the server may negatively effect the reimplementation. This can be a challenge as depending on the activity and updates in the tool, wholescale changes can occur that then need to be reimplemented, or the reimplementation will be out of date. Another issue with reimplementation is that you need to continue to track changes in the original code. This is especially the case if the reimplementor is not intimately familiar with the workings of the tool. The biggest issue with reimplementation is probably the amount of work that is needed to achieve behavior expressed in the original.
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New code means that new technologies can be used advantageously.The expression of behavior can be made more “natural” to the new environment.There a many benefits in a complete rewrite of a command: I can just use the tool as is without change.You can wrap the native application in a PowerShell script.For example, SWAGGER provides a very easy way to do this You can re-implement the tool in managed code or script.If I want to have the familiar, comfortable PowerShell experience, there are only a few options that are available to me. Mostly these are glue utilities, they were created to manipulate the outputted data into a form to be more easily filtered, or changed to fit a specific need. In some cases, utilities such as awk and sed, an entire new mini-languages were created. The authors of these tools have their own specific approach to solving the problems that are uniquely theirs.
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Some of these tools have existed for many years and have grown in functionality and complexity including their own ‘mini-language’. There are a number of very excellent and vital standalone tools that target the scenarios for administration and management very well. PowerShell spent much of its first decade in building up a large number of tools for system management, but does not have cmdlets for all aspects of administration on all platforms. It’s a way to get help from the application. Microsoft Windows may provide /?, but the point is the same. Additionally, UNIX systems have man pages and the mostly ubiquitous -help for getting assistance directly from the command.
Every shell has the capability of executing utilities, you could argue that this is the main use for a shell and PowerShell is no different. Some of these are not unique to PowerShell, and many tools also provide some of these behaviors. output consisting of objects (no text parsing).a single parameter parser so errors about mis-parameter use are consistent across all commands.consistent parameter naming for similar uses.PowerShell provides a number of benefits to its users In the second post, I’ll be exploring some of the work to more easily convert the use of native tools into the cmdlet/object output model of PowerShell. In the first post, I’m going to discuss a few of the ways that PowerShell can better incorporate native executables into our object oriented world and how we can use these tools to better fit into our model of more discrete operations. In this two part blog post I’m going to investigate how PowerShell can take better advantage of native executables.
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