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Articles on Trending Technologies
Technical articles with clear explanations and examples
Difference Between Flood-fill and Boundary-fill Algorithm
In this post, we will understand the differences between flood fill algorithm and boundary fill algorithm. They are area-filling algorithms, and they can be differentiated based on whether a random pixel has the region's original colour or not.Flood-fill algorithmIt is also known as seed fill algorithm.It calculates the area that is connected to a given node with respect to a multi-dimensional array.It works by filling up or recolouring a specific area that contains different colours in the inside part, and hence, the boundary of the image.It is represented by a picture that has a neighbourhood which has borders and has ...
Read MoreDifference Between Greedy Method and Dynamic Programming
In this post, we will understand the differences between the greedy algorithm and dynamic programming methods.Greedy algorithmIt is an algorithmic paradigm that builds up on a solution in parts, step by step. The next step is chosen such that it gives the most obvious and immediate benefit.Problems that involve choosing local optimal values will help in choosing the global optimal values/solution to the problem. Such ate the problems associated with greedy algorithm.There is no surety that a greedy algorithm would lead to an optimal solution.An optimal choice is made at every stage of the problem, i.e the local optimal solution.It ...
Read MoreDifference Between Prim's and Kruskal's Algorithm
In this post, we will understand the differences between Prim's and Kruskal's algorithms.Kruskal's algorithm for Mininum Spanning Tree (MST)When a connected and undirected graph is given, a spanning tree of such a graph is the subgraph which is a tree that connects all of the vertices.A single graph can have multiple spanning trees.A minimum spanning tree (MST) (also known as minimum weight spanning tree) for a weighted, connected and undirected graph is a spanning tree that weighs less than or equal to the weight of every other spanning tree.The weight of a spanning tree is determined by adding the weights ...
Read MoreHow to update the specific node of the XML file using PowerShell?
To update the specific XML node using PowerShell, we first need to select that node with the attribute with SelectSingleNode() method.We have below the XML file from the link stored in SampleXml.XML on C:\Temp location.https://docs.microsoft.com/en-us/previous-versions/windows/desktop/ms762271(v=vs.85)In this example, we are going to update Autor and Genre properties of the Book having attribute Id = ‘bk102’$xml=[xml](Get-Content C:\Temp\SampleXML.xml)$node=$xml.SelectSingleNode("//book[@id='bk102']")The above commands will load the XML file and select node with attribute value ‘bk102’.$node.genre='Non-Fiction' $node.author='Dell James' $xml.Save("C:\Temp\SampleXML.xml")The above commands will update the genre and author property.
Read MoreHow to check Azure VM Power state using PowerShell?
To check if the VMs are running, deallocated, or stopped using PowerShell, we need to use the - Status parameter.If you write only the Get-AzVM command to get the VM details, it won’t show up the Azure VM power status default.ExampleTo check the Azure VM Power Status, Get-AzVM -statusOutput The above command will show the Power State for all VMs for that particular subscription. For different subscriptions, you need to change the subscription and run this command.To get the VM Power State for the specific ResourceGroup, use the ResourceGroup name parameter.ExampleFor example, Get-AzVM -ResourceGroupName TestVMRG -StatusThe above command will retrieve all ...
Read MoreHow to get the Shared folder permissions with PowerShell?
To get the shared folder permissions using PowerShell, we can use the Get-SmbShare cmdlet.For example, we have a shared folder name DSC and we need to retrieve its permissions, we can use the below command.CommandGet-SmbShare -Name DSCOutputName ScopeName Path Description ---- --------- ---- ----------- DSC * E:\DSCIt doesn’t show the permission by default and we can retrieve the full list using Fl *. For example, Get-SmbShare -Name DSC | fl *And you can see the PresentPathACL property there. This property is used to retrieve the permissions on the shared folder. So we can directly use the command, Command(Get-SmbShare -Name ...
Read MoreHow to change SMB shared folder access permission using PowerShell?
We can use the command Grant-SmbShareAccess to change the shared folder access permission or to assign the new user to the shared folder with permission.In this example, we have already shared a folder name called “Shared Folder” and everyone's user permission is assigned with the read access and we will change it to the Full access permission.PS C:\Temp> Get-SmbShareAccess -Name "Shared folder" Name ScopeName AccountName AccessControlType AccessRight ---- --------- ----------- ----------------- ----------- Shared folder * Everyone Allow ReadExampleTo change the permission ...
Read MoreHow to share a windows folder using PowerShell?
To share a windows folder using PowerShell, we can use the New-SmbShare command. This command is a part of the module SmbShare.In this example, we have a folder called “DSC” and we want to share. The below command will simply share folderNew-SmbShare -Path E:\DSC\ -Name "Shared Folder"OutputName ScopeName Path Description ---- --------- ---- ----------- Shared Folder * E:\DSCDSC folder will be shared with a “Shared Folder” name with everyone’s Read Permission by default because we haven’t specified the scope yet.To assign the Full Access permission to the specific user, ...
Read MoreHow to remove windows folder sharing using PowerShell?
To remove the windows folder sharing using PowerShell, we can use the Remove-Smbshare command. For example, PS C:\Temp> Remove-SmbShare -Name DSC Confirm Are you sure you want to perform this action? Performing operation 'Remove-Share' on Target '*, DSC'. [Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "Y"):Once you use this command, it will ask for confirmation. To remove the sharing forcefully, use - Force parameter. For example, Remove-SmbShare -Name DSC -ForceTo remove the shared folder permissions on the remote computer, you need to use the CIM session.In the below example, ...
Read MoreHow to delete the specific node from the XML file using PowerShell?
To delete the specific XML node from the PowerShell, we can use the RemoveChild() method of the XML.For example, We have a sample XML file from Microsoft.https://docs.microsoft.com/en-us/previous-versions/windows/desktop/ms762271(v=vs.85)We have saved the above file into C:\Temp\SampleXml.XML and we need to delete the book node with attribute ‘bk102’ and for that, we will use the XPath method of the XML.Below commands will first search the XML book node with the book attribute ‘bk102’ and then we will delete it.$xml = [xml](Get-Content C:\Temp\SampleXML.xml) $node = $xml.SelectSingleNode("//book[@id='bk102']") $node.ParentNode.RemoveChild($node) | Out-Null $xml.Save('C:\Temp\SampleXML.xml')If you want to delete all the nodes which have the name “Book”, we can ...
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