I have had problems in my very long scripts with Write-Progress. When writing the script you add in several Write-Progress statements and give them a percentage, the problem is that the percentage you give it is likely a number that you are typing in and hard coding. This is a problem because if you add to the code or move the code around you have to go back and change every one of these items.<\/p>\n
In a recent script I wrote that was just over 300 lines I had to repeat this process 5 times which was really frustrating, so I thought up a way to make sure I don’t have to do it again.<\/p>\n
Now, I should state beforehand that this process only works if each write-progress is executed once and only once. Any changes to that means you may need to add some other intelligence, but in general I think this is a good starting point.<\/p>\n
The first thing you want to do is read the script file that you are executing to get a count of the number of lines with a “Write-Progress” in them. Then store a tracking number as a global variable so that all functions can see it. Do this at the start of the script.<\/p>\n
Here is my single line to do all of the above:<\/p>\n
So, there is a whole lot of learning packed into a small area here. Let me cover the confusing sections. First naming a variable The command The object property “ Then we pipe the script contents to All of this means that the variable So now all we need is for So, as you can see I use the same techniques described above to increment the variable and then do some basic match to get a percentage of total progress.<\/p>\n You can throw this code into any script to give you a dynamically updating progress indicator. There are two things to keep in mind. If you have a loop that runs a I have had problems in my very long scripts with Write-Progress. When writing the script you add in several Write-Progress statements and give them a percentage, the problem is that the percentage you give it is likely a number that you are typing in and hard coding. This is a problem because if you add […]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[4],"tags":[],"_links":{"self":[{"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=\/wp\/v2\/posts\/168"}],"collection":[{"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=168"}],"version-history":[{"count":0,"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=\/wp\/v2\/posts\/168\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=168"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.Get-Blog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}$Global<\/span>:I<\/span><\/code> will create a global variable called “I” that is accessible from all PowerShell scopes. As well, there is a “;” after this portion to execute this as a separate line of code. Since there is no output, this will not become part of the variable when run like this. For more information on scopes visit http:\/\/technet.microsoft.com\/en-us\/library\/dd315289.aspx<\/a>.<\/p>\nGC<\/span><\/span><\/code> is a built-in alias for Get-Content<\/span><\/span><\/code>.<\/p>\n$MyInvocation<\/span>.InvocationName<\/span><\/code> will provide the file path of the script that is currently being executed. So, in effect, we are reading the entire script that is currently running.<\/p>\n?<\/span><\/span><\/code> which is a built-in alias for Where-Object<\/span><\/span><\/code>. Then we look for a match on “Write-Progress”. You’ll notice that this whole section is surrounded in $(<\/span>)<\/span><\/span><\/code> which “Instantiates” a variable for this this output. Then we can find the number of lines with the .count property. After that, I subtract 1 so it doesn’t count itself.<\/p>\n$ProgressIndicators<\/span><\/code> will now contain the number of times “Write-Progress” appears in the script, no matter what script you place it in.<\/p>\nWrite-Progress<\/span><\/span><\/code> to read these two values when it run and increment our global tracking variable.<\/p>\n
\nSleep<\/span> 1<\/span>
\nWrite-Progress<\/span> -Activity<\/span> "Making Progress"<\/span> -Status<\/span> "Test 2"<\/span> -PercentComplete<\/span> $(<\/span>$(<\/span>$Global<\/span>:I++<\/span>;$Global:I)<\/span> \/<\/span> $ProgressIndicators<\/span> *<\/span> 100<\/span>)<\/span>
\nSleep<\/span> 1<\/span>
\nWrite-Progress<\/span> -Activity<\/span> "Making Progress"<\/span> -Status<\/span> "Test 3"<\/span> -PercentComplete<\/span> $(<\/span>$(<\/span>$Global<\/span>:I++<\/span>;$Global:I)<\/span> \/<\/span> $ProgressIndicators<\/span> *<\/span> 100<\/span>)<\/span>
\nSleep<\/span> 1<\/span><\/div><\/div>\nwrite-progress<\/span><\/span><\/code> command over and over then it will continue to increment and break this. You could remove the $Global<\/span>:I++<\/span><\/span><\/code> portion or make a sub progress bar to correctly display the progress of the loop. Also, you might skip a write-progress<\/span><\/span><\/code> line due to an IF<\/span><\/span><\/code> statement. If so maybe you could increment the value of $Global<\/span>:I<\/span><\/code> in an ELSE<\/span><\/span><\/code> statement.<\/p>\n","protected":false},"excerpt":{"rendered":"