CODEWITHSUNDEEP
powershell
Tula
Tula

Reputation: 101

PowerShell case sensitivity variables

I want to write a script that does a manipulation on users in my company.

Usernames can be with capital letters/small letters, and also the domain name is sometimes assigned to them with capital letters, so a username can be like: domain\username, DOMAIN\USERNAME, DOMAIN\username or domain\USERNAME.

I ask for the username like this:

$user = Read-Host "Please insert username"

How can I make $user non case sensitive and also the company name?

The username needs to be like $company\$user without case sensitivity.

Upvotes: 8

Views: 13851

Answers (2)

Bacon Bits
Bacon Bits

Reputation: 32210

String comparisons in PowerShell are typically case-insensitive by default.

Strings themselves are case aware, meaning they know that an A is a different glyph than an a and it will remember which was used, but the normal comparison operators (-eq, -match, -like, -lt, -in, etc.) are all case-insensitive.

You have to specify the case-sensitive versions for case-sensitive comparisons (-ceq, -cmatch, -clike, -clt, -cin, etc.). You can also specify the explicitly case-insensitive operators (-ieq, -imatch, -ilike, -ilt, -iin, etc.).

If you want to force the characters to a specific case, you can do this:

#Set characters to lower case
$user = $user.ToLower();

#Set characters to upper case
$user = $user.ToUpper();

But there is no property of strings that marks them as inherently case-insensitive.

Upvotes: 9

Deadly-Bagel
Deadly-Bagel

Reputation: 1620

Special treatment is not needed, Windows credentials are case-insensitive so regardless of what case the user enters the domain or username you can pass that to a cmdlet or command line tool and it will just work.

For example, creating a PSCredential with the following usernames will have identical results:

  • MyCompany\MyUsername
  • mycompany\myusername
  • MYCOMPANY\myusername
  • MyCoMpAnY\mYuSeRnAmE

Additionally, by default PowerShell comparison operators are not case sensitive;

"CASE" -eq "case"    #returns true
"CASE" -ceq "case"   #case-sensitive version returns false

Upvotes: 0

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