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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to retrieve the Azure VM RAM and CPU size using PowerShell?
Azure VM RAM and CPU size depend on the hardware profile chosen for the VM. In this example, we will retrieve VM (TestMachine2k16) hardware profile and then we can find how much RAM or CPU is allocated to it.To get the Size of the Azure VM, PS C:\> $azvm = Get-AzVM -VMName 'TestMachine2k16' PS C:\> $azvm.HardwareProfile.VmSizeOutputStandard_DS2_v2You can check the above size on the Microsoft Azure website to know how much RAM and CPU are associated with it and another way using the PowerShell by using the Get-AZVmSize command.PS C:\> $vmsize = $azvm.HardwareProfile.VmSize PS C:\> Get-AzVMSize -VMName $azvm.Name -ResourceGroupName $azvm.ResourceGroupName | ...
Read MoreHow to retrieve the Azure VM Subscription Name using PowerShell?
Once you are connected to the Azure Account, there are possibilities that the Get-AzVM will display the VMs from all the Azure Subscriptions.To find the specific Azure VM Subscription name, we will first retrieve the details of the VM using the Get-AzVM and it has an ID property that contains the Subscription ID and from the subscription ID property, we can retrieve the name of the Azure Subscription Name.PS C:\> $azvm = Get-AzVM -Name TestMachine2k16 PS C:\> $subid = ($azvm.Id -split '/')[2] PS C:\> (Get-AzSubscription -SubscriptionId $subid).NameThe above will retrieve the name of the subscription.
Read MoreHow to eject the USB device from the system using PowerShell?
To eject the USB device from the system, we first need to get the USB device using PowerShell. WMI class Win32_Volume will help us to find the USB device.We know that all removal devices using the DriveType '2'. So we will filter out the USB device among the listed devices.PS C:\> $usbdev = gwmi win32_volume | where{$_.DriveType -eq '2'}The below commands will helpful to unallocated the USB from the system.PS C:\> $usbdev.DriveLetter = $null PS C:\> $usbdev.Put()OutputPath : \localhost\root\cimv2:Win32_Volume.DeviceID="\\?\Volume{6e4d6f1e-a8c2-11eb-9493-005056c00008}" RelativePath : Win32_Volume.DeviceID="\\?\Volume{6e4d6f1e-a8c2-11eb-9493-005056c00008}" Server : localhost NamespacePath : root\cimv2 ClassName : Win32_Volume IsClass : False IsInstance : True IsSingleton : FalseAnd ...
Read MoreHow to check if the USB device is connected to the system using PowerShell?
To retrieve the USB-connected devices using Powershell, we need to retrieve all the drives using the WMI object or CIM Instance and need to filter the win32_diskdrive class with the USB as shown below.So basically, USB devices and other removable devices have the drivetype '2'. You can search with the InterfaceType or the DriveType.WMI commands, gwmi win32_diskdrive | where{$_.Interfacetype -eq "USB"}Alternatively, With the CIM commands, Get-CimInstance -ClassName Win32_DiskDrive | where{$_.InterfaceType -eq 'USB'}orGet-CimInstance -ClassName Win32_LogicalDisk | where{$_.DriveType -eq '2'}If there is no USB device connected to the system, there will be no output. To retrieve the USB disk on the remote ...
Read MoreHow to create a Test Strategy Document?
Before learning about Test Strategy Document, you must understand Test Plan. A test plan is a document containing the scope, methods, and objectives of software testing. Since many companies deal with multiple projects, the project team needs to prepare a goal-centric test plan considering the specific requirements of each project.Regardless of the nature of the project (support or development), proper planning remains the significant stepping stone for any testing process. Apart from a brief introduction to the project, the test plan also contains methods and types of testing that testers should execute during the testing.The Test strategy is a document ...
Read MoreExplain Agile Software Process and its Principles
The Agile Manifesto first appeared in 2001. It sought to alter the software creation process. The manifesto has four key aspects, but few people are aware of the 12 Agile Principles. They provide more specific explanations of the process in which agile product development can be carried out. After many years, nearly all companies claim that they provide "agile services", but most only pay lip service to the Agile Manifesto's ideas and concepts. The software development industry has also evolved dramatically. It's worth revisiting the agile standards to check their meanings and whether they're still relevant.Timely and Consistent Delivery of ...
Read MoreHow to convert a .wav file to a spectrogram in Python3?
To convert a .wav file to a spectrogram in python3, we can take the following steps −Load a .wav file from local machine.Compute a spectrogram with consecutive Fourier transforms using spectrogram() method.Create a pseudocolor plot with a non-regular rectangular grid using pcolormesh() method.Use imshow() method with spectrogram.To display the figure, use show() method.Exampleimport matplotlib.pyplot as plt from scipy import signal from scipy.io import wavfile plt.rcParams["figure.figsize"] = [7.00, 3.50] plt.rcParams["figure.autolayout"] = True sample_rate, samples = wavfile.read('test.wav') frequencies, times, spectrogram = signal.spectrogram(samples, sample_rate) plt.pcolormesh(times, frequencies, spectrogram, shading='flat') plt.imshow(spectrogram) plt.show()Output
Read MoreWhat is the preferred way to set Matplotlib figure/axes properties?
To set the properties of a plot, we can get the current axis of the plot. After that, we can perform several set_* methods to set the properties of the plot.StepsCreate a figure and a set of subplots using subplots() method with figsize=(5, 5).Create x and y data points using numpy.Plot x and y using plot() method.Set the title and labels (for X and Y axis) using set_xlabel() and set_ylabel() methods.To display the figure, use show() method.Exampleimport numpy as np import matplotlib.pyplot as plt plt.rcParams["figure.figsize"] = [7.00, 3.50] plt.rcParams["figure.autolayout"] = True fig, ax = plt.subplots() x = np.linspace(-1, 1, 10) y = ...
Read MoreHow to remove gaps between bars in Matplotlib bar chart?
To remove gaps between bars, we can change the align value to center in the argument of bar() method.StepsCreate a dictionary called data with two keys, milk and water.Get the list of keys and values in the dictionay.Using subplots() method, create a figure and add a set of two subplots.On axis 2, use bar method to plot bars without gaps. Set the width attribute as 1.0. Set the title using set_title() method.Use tight_layout() to adjust the padding between and around the subplots.To display the figure, use show() method.Exampleimport matplotlib.pyplot as plt plt.rcParams["figure.figsize"] = [7.00, 3.50] plt.rcParams["figure.autolayout"] = True data = {'milk': 12, 'water': ...
Read MoreRotate theta=0 on a Matplotlib polar plot
To set theta=0 on a matplotlib polar plot, we can take the following steps −Create random theta in the range of 0 to 100; convert them into radian.Using set_theta_zero_location() method, we can set the location of theta to 0.Plot theta_in_rad and data_r using plot() method.Set the title of the plot using title() method.To display the figure, use show() method.Exampleimport numpy as np import matplotlib.pyplot as plt import random plt.rcParams["figure.figsize"] = [7.00, 3.50] plt.rcParams["figure.autolayout"] = True theta_in_rad = [float(i) * np.pi / 180.0 for i in range(0, 100, 10)] data_r = random.sample(range(70, 90), 10) ax = plt.subplot(111, polar=True) ax.set_theta_zero_location("W") ax.plot(theta_in_rad, data_r, color='r', linewidth=3) ax.set_title("Example", ...
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