Powershell Basics
Powershell Fundamentals
In cmd everything is interpreted as strings but not object.
If I use dir then it will list all the folders not as folder but as a string.
But with powershell, everything is object. That gives a lot of control to user for performing multiple tasks.
PS C:\users\century1> dir | Sort-Object descending
Directory: C:\users\century1
Mode LastWriteTime Length Name
---- ------------- ------ ----
d-r--- 7/16/2016 1:23 PM Videos
d----- 7/16/2016 1:23 PM Saved Games
d-r--- 7/16/2016 1:23 PM Pictures
d-r--- 7/16/2016 1:23 PM Music
d-r--- 7/16/2016 1:23 PM Links
d-r--- 7/16/2016 1:23 PM Favorites
d-r--- 7/16/2016 1:23 PM Downloads
d-r--- 8/30/2018 3:09 AM Documents
d-r--- 7/16/2016 1:23 PM Desktop
we could use dir here because it is an alias to powershell cmdlet get-childitem.
Basic Syntax for Powershell
Powershell follows common verb-noun syntax. For example you want to create new object then the command will be create-object.
Powershell versions
Up until powershell 5.1, they run on top of .NET Framework, but the current powershell which is v6 which runs on top of .NET core which is cross platform and can run on mac or linux boxes.
PS C:\users\century1> $psversiontable
Name Value
---- -----
PSVersion 5.1.14393.3866
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.14393.3866
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1