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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to check if the file is empty using PowerShell?
To check if the file is empty using PowerShell, we can use the string method called IsNullorWhiteSpace(). This method provides result true if the file is empty or only contains the white spaces otherwise false.For example, We have a test2.txt text file which has whitespaces.Example[String]::IsNullOrWhiteSpace((Get-content C:\Test2.txt))OutputTrueBut if you have a file like CSV which contains few headers but the data is empty, in that case, Get-Content will show the wrong output because it will consider headers. For example, Example[String]::IsNullOrWhiteSpace((Get-content C:\Temp\NewUsers.csv))OutputFalse Because the file has headers.PS C:\> Get-Content C:\Temp\NewUsers.csv Name, FirstName, Surname, EMPNumber, CountryIn that case, we can use the Import-CSV ...
Read MoreHow to open any file with its default application with PowerShell?
To open any file using its default application, we can use the Invoke-Expression command. For example, we want to open a file on the C:\temp and the file name is NewUsers.CSV then you can run the below command.Invoke-Expression C:\Temp\NewUsers.csvThe above command will open the file from that location. If the default application is not set then Windows will ask for the default application to select.If you know any application name and which can be opened with the shortcut then you can directly type the name of the application. For example, Notepad.exe, Calc.exeGenerally, they can be opened directly but this command ...
Read MoreHow to convert raw text to the CSV (Comma Separated Values) in PowerShell?
We have a raw text example and to convert it into the CSV values, we can use below code.ExamplePS C:\> $text = "This is a PowerShell latest version" PS C:\> $text.Replace(' ', ', ')OutputThis, is, a, PowerShell, latest, versionIf there are multiple spaces between the keywords then the above replace command would go wrong. For example, ExamplePS C:\> $text = "This is a PowerShell latest version" PS C:\> $text.Replace(' ', ', ')OutputThis, , is, , , a, , , , PowerShell, latest, version So we can use another method as shown below.$text -replace '\s+', ' 'In the above command, \S ...
Read MoreHow to get the list of opened applications in windows with PowerShell?
We can get the list of opened applications in Windows using PowerShell using Get-Process command. Get-Process command shows the currently running processes in the foreground and the background as well.If we simply run the Get-Process command then it will give the process names and their associated process IDs and CPU, memory usage.PS C:\> Get-ProcessIf we check the members of the Get-Process, there is a MainWindowsTitle Property. This property indicates the Title of the opened application.In the below example, we will find the Application Name, associated process, and the ID of the application. For example, Get-Process | Select MainWindowTitle, ProcessName, Id ...
Read MoreHow to delete the Organizational Unit (OU) from the active directory using PowerShell?
To delete the OU from the Active Directory using PowerShell, we need to use the command Remove-ADOrganizationUnitRemove-ADOrganizationalUnit -Identity "OU=LabUsers, DC=Labdomain, DC=Local"If the OU is protected from the accidental delete, you will receive an Access is Denied error as shown below.Remove-ADOrganizationalUnit : Access is denied At line:1 char:1 + Remove-ADOrganizationalUnit -Identity "OU=LabUsers, DC=Labdomain, DC=Lo ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : PermissionDenied: (OU=LabUsers, DC=Labdomain, DC=Local:ADOrganizationalUnit) [Remove-ADOrgan izationalUnit], UnauthorizedAccessException + FullyQualifiedErrorId : ActiveDirectoryCmdlet:System.UnauthorizedAccessException, Microsoft.ActiveDirectory.Managem ent.Commands.RemoveADOrganizationalUnitSo for that, first you need to disable the protected mode using the Set-ADOrganizationalUnit command and then need to run the remove command as shown below.$ou = "OU=LabUsers, DC=Labdomain, ...
Read MoreHow to delete all users from specific OU using PowerShell?
To remove all users from the specific OU, we need to first retrieve the users from that OU. For example, we have 3 users in the OU called LABDOMAIN and we need to delete them all.Get-ADUser -SearchBase "OU=LabUsers, DC=labdomain, DC=local" -Filter *The above command will retrieve users from the specific OU and then we can use the Remove-ADUser command to delete them all.ExampleGet-ADUser -SearchBase "OU=LabUsers, DC=labdomain, DC=local" -Filter * | Remove-ADUser -Confirm:$false -Verbose-Confirm switch has been added to bypass the confirmation for all the users. The default confirmation is true.OutputVERBOSE: Performing the operation "Remove" on target "CN=JensonA, OU=LabUsers, DC=labdomain, DC=local". ...
Read MoreHow to create bulk users in the active directory using PowerShell?
Using Random Account NameTo create bulk users in the AD using PowerShell, there are multiple methods. For example, let say if you want to create 50 sample users for the lab environment without considering the other required properties, then you can use the below command, $pass = Read-Host "Enter Account Password " -AsSecureString 1..50 | foreach{ New-ADUser -Name "TempUser$_" -AccountPassword $pass -Path "OU=LabUsers, DC=labdomain, DC=local" -ChangePasswordAtLogon $true -Enabled $true -PasThru}The above command will create 50 Temp users in the OU named LABUSERS and one time we need to enter the password while running the script and when users log in ...
Read MoreHow does spring boot connect localhost MySQL
For this, use application.properties −spring.datasource.username=yourMySQLUserName spring.datasource.password=yourMySQLPassword spring.datasource.url=jdbc:mysql://localhost:3306/yoruDatabaseName spring.datasource.driver-class-name=com.mysql.cj.jdbc.DriverTo understand the above syntax, let us create a table −mysql> create table demo71 −> ( −> id int, −> name varchar(20) −> ); Query OK, 0 rows affected (3.81 sec)Insert some records into the table with the help of insert command −mysql> insert into demo71 values(100, 'John'); Query OK, 1 row affected (0.13 sec) mysql> insert into demo71 values(101, 'David'); Query OK, 1 row affected (0.49 sec) mysql> insert into demo71 values(102, 'Bob'); Query OK, 1 row affected (0.15 sec)Display records from the table using select statement −mysql> select *from ...
Read MoreWhat is the difference Between AND, OR operator in MySQL while Retrieving the Rows?
The difference between AND, OR is that AND evaluates both conditions must be true for the overall condition to be true. The OR evaluates one condition must be true for the overall condition to be true.Let us create a table −mysql> create table demo70 −> ( −> id int not null auto_increment primary key, −> name varchar(20), −> age int −> ); Query OK, 0 rows affected (0.67 sec)Insert some records into the table with the help of insert command −mysql> insert into demo70(name, age) values('John', 23); Query OK, 1 row affected (0.18 sec) mysql> insert into demo70(name, age) ...
Read MoreUpdate all varchar column rows to display values before slash in MySQL?
For this, use UPDATE command along with SUBSTRING_INDEX(). Let us first create a table −mysql> create table demo69 −> ( −> name varchar(40) −> ); Query OK, 0 rows affected (5.04 sec)Insert some records into the table with the help of insert command −mysql> insert into demo69 values('John/Smith'); Query OK, 1 row affected (0.83 sec) mysql> insert into demo69 values('David/Miller'); Query OK, 1 row affected (0.23 sec) mysql> insert into demo69 values('Chris/Brown'); Query OK, 1 row affected (0.40 sec) mysql> insert into demo69 values('Carol/Taylor'); Query OK, 1 row affected (0.36 sec)Display records from the table using select ...
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