gensite

pns/modules/guides/pages/Day_3_WOBC_Student_Guide.adoc

@@ -96,39 +96,41 @@ In order to maximize efficiency in your PowerShell code, always filter before so
 .Low efficiency command
 [source,powershell]
 ----
-PS C:\> Get-Process | Sort-Object -Property Id | Select-Object Name, Id
+PS C:\> Get-ChildItem -Path C:\Windows\System32 -Recurse -ErrorAction SilentlyContinue | Sort-Object | Select-Object -Property Name
+
+PS C:\> Measure-Command {Get-ChildItem -Path C:\Windows\System32 -Recurse -ErrorAction SilentlyContinue | Sort-Object | Select-Object -Property Name}
 
-PS C:\> Measure-Command { Get-Process | Sort-Object -Property Id | Select-Object Name, Id }
     Days              : 0
-    Hours             : 0 
+    Hours             : 0
     Minutes           : 0
-    Seconds           : 0
-    Milliseconds      : 22
-    Ticks             : 227313
-    TotalDays         : 2.6309375E-07
-    TotalHours        : 6.31425E-06
-    TotalMinutes      : 0.000378855
-    TotalSeconds      : 0.0227313
-    TotalMilliseconds : 22.7313
+    Seconds           : 2
+    Milliseconds      : 111
+    Ticks             : 21111244
+    TotalDays         : 2.44343101851852E-05
+    TotalHours        : 0.000586423444444444
+    TotalMinutes      : 0.0351854066666667
+    TotalSeconds      : 2.1111244
+    TotalMilliseconds : 2111.1244
 ----
 
 .Higher efficiency command
 [source,powershell]
 ----
-PS C:\> Get-Process | Select-Object Name, Id | Sort-Object -Property Id 
+PS C:\> Get-ChildItem -Path C:\Windows\System32 -Recurse -ErrorAction SilentlyContinue | Select-Object -Property Name | Sort-Object
+
+PS C:\> Measure-Command {Get-ChildItem -Path C:\Windows\System32 -Recurse -ErrorAction SilentlyContinue | Select-Object -Property Name | Sort-Object}
 
-PS C:\> Measure-Command { Get-Process | Select-Object Name, Id | Sort-Object -Property Id }
     Days              : 0
     Hours             : 0
     Minutes           : 0
-    Seconds           : 0
-    Milliseconds      : 16
-    Ticks             : 166182
-    TotalDays         : 1.92340277777778E-07
-    TotalHours        : 4.61616666666667E-06
-    TotalMinutes      : 0.00027697
-    TotalSeconds      : 0.0166182
-    TotalMilliseconds : 16.6182
+    Seconds           : 1
+    Milliseconds      : 37
+    Ticks             : 10370187
+    TotalDays         : 1.200253125E-05
+    TotalHours        : 0.00028806075
+    TotalMinutes      : 0.017283645
+    TotalSeconds      : 1.0370187
+    TotalMilliseconds : 1037.0187
 ----
 
 The performance difference seems minor in the above examples. However, when working with commands that gather data from multiple machines, or over the network, the difference in efficiency could be a significant factor in time to complete.