powershell if variable empty

Powershell Automation variables are variables that are automatically loaded once the Powershell is opened. These variables are generally stored in content including User information: For example, user's root directory $homeConfiguration

http://techibee.com/powershell/check-if-a-string-is-null-or-empty-using-powershell/1889Check If a string is NULL or EMPTY using PowerShellby Techibee on October 10, 2012In this post, I'll show you what to verify if a string is empty, null or have

The previous section focuses on the definition and use of variables in PowerShell, as well as some tips on how to include special characters in variables or variables at output, as described here.This section describes built-in variables in

Providers and drives PowerShell series has not updated for a long time, the main reason is that some of the topics involved in lazy is too much, for a while do not know how to organize into the article sent out. Recently just because of a little

PowerShell Some simple actions for Excel A slightly higher level of language involves operations on COM objects, and as Microsoft's own evolving scripting language, PowerShell has this feature that is not surprising, first using the powerful

Powershell for some simple Excel operations A slightly advanced language involves operations on COM objects. As a script language developed by Microsoft, powershell has this function. First of all, itUse a powerful class library provided by. NET

Script debugging has always been a daunting task, and it was a disaster before PowerShell appeared. Microsoft has finally made a lot of improvements in PowerShell, not only with $error,-whatif, but also with Ise. In addition to the syntax also added

A few days ago to see an article about Metasploit and PowerShell, which mentioned a statement about the port scan, write very concise, very good idea, you can throw away the bulky nmap directly scan the specified IP port: Copy Code code as

Powershell provides a merge operator for strings, the join operator-join a set of strings into a single string, and substrings are added to the resulting string in the order in which they appear in the command.Join operatorsThe syntax for connection

Creating a variable in PowerShell generates a Psvariable object in the background that contains not only the value of the variable, but also other information about the variable, such as a description of write-only protection.If you output a