Powertip of the day from powershell.com summary last week (9)

Identify 64-bit Environments

Identifying 64-bit-environments

Http://powershell.com/cs/blogs/tips/archive/2010/09/20/identifying-64-bit-environments.aspx

Determine the length of the variable type intptr. If it is 8, it is a 64-bit system, and 4 is a 32-bit system.

If ([intptr]: Size-EQ 8) {"Ein 64-bit-System"} else {"Ein 32-bit-System "}

 

 

Static Search Method

Finding static methods

Http://powershell.com/cs/blogs/tips/archive/2010/09/21/finding-static-methods.aspx

A type usually contains many useful methods. You can use get-member to display all of them, and use the-static parameter to view all static methods. If you do not add a static method, you can only view the instance method:

[Datetime] | get-member-static

[Datetime]: isleapyear (2010)

 

 

Prompt for Password

Prompting for passwords

Http://powershell.com/cs/blogs/tips/archive/2010/09/22/prompting-for-passwords.aspx

The get-credential method prompts you to enter the password on a visual interface. This method returns a credential object containing the encrypted password. Only the getnetworkcredential method can be used to view the plaintext information:

$ Cred = Get-credential someusername

$ Cred. Password

# Here the information is encrypted

$ Cred. getnetworkcredential ()

# Using this method, you can return its plaintext Information

$ Cred. getnetworkcredential (). Password

# And plaintext passwords

 

 

The console prompts you to enter the password

Prompting for secret passwords via console with powershell

Http://powershell.com/cs/blogs/tips/archive/2010/09/23/prompting-for-secret-passwords-via-console-with-powershell.aspx

You can use the read-host method to hide the password entered by the user:

$ Pwd = read-host-assecurestring 'enter password'

The password is saved in encrypted mode. To view the plaintext information, you only need to convert it into a credential object:

(New-Object System. Management. Automation. pscredential ('dummy', $ PWD). getnetworkcredential (). Password

 

 

Enter the password through the console prompt

Prompting for secret passwords via console

Http://powershell.com/cs/blogs/tips/archive/2010/09/24/prompting-for-secret-passwords-via-console.aspx

Use a low-level ps api:

$ C = $ host. UI. promptforcredential ('Log on', $ null, 'test \ user', 'target ')

$ C

This method allows you to define information such as the title of the dialog box.

 

 

Retrieve subtitle list

Getting alphabetical listings

Http://powershell.com/cs/blogs/tips/archive/2010/09/13/getting-alphabetical-listings.aspx

Using the... method, powershell only supports the number type, for example:

1. 10

But here we can achieve this through the type conversion method:

$ OFS = ","

[String] [char [] (65 .. 90)

In this way, you can obtain a list from A to Z.

 

 

Get short date type

Getting short dates

Http://powershell.com/cs/blogs/tips/archive/2010/09/14/getting-short-dates.aspx

This article describes how to use the methods in objects.

(Get-date). tow.datestring ()

Actually, it is the CLR method.

In addition, you can view all supported methods:

Get-date | get-member-membertype * Method

 

 

Search for a leap year

Finding leap years

Http://powershell.com/cs/blogs/tips/archive/2010/09/15/finding-leap-years.aspx

The date type contains many useful static methods. For example, you can check whether the specified year is a leap year:

[Datetime]: isleapyear (1904)

 

 

View the number of days in a month

Finding days in month

Http://powershell.com/cs/blogs/tips/archive/2010/09/16/finding-days-in-month.aspx

It is implemented through static method of date type, for example:

[Datetime]: daysinmonth (2009, 2)

# Result: 28

[Datetime]: daysinmonth (2008, 2)

# Result: 29

 

 

View the maximum value

Finding maximum values

Http://powershell.com/cs/blogs/tips/archive/2010/09/17/finding-maximum-values.aspx

There is a range for digital storage. For example, if the range of a byte storage is 0 to 255, what about int32 and int64? You can use powershell:

[Int32]: maxvalue

# Result: 2147483647

[Int64]: maxvalue

# Result: 9223372036854775807

[Byte]: maxvalue

# Result: 255

You can also see the differences between the unsigned types through this method:

[Int32]: maxvalue
2147483647
[Uint32]: maxvalue
4294967295
[Int32]: minvalue
-2147483648
[Uint32]: minvalue
0

Because the unsigned number does not exist, the maximum value is twice the value of the signed type.

 

 

 

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