Subject: Location of Dollar Sign

From: Stefan Baur <[email-masked]>
Date: Tue, 30 Jan 2024 16:11:58 +0100

Hi Bart,

is that dollar sign located at the beginning, in the middle, or at the 
end of the user name?

man 8 useradd states (emphasis mine):

"It is usually recommended to only use usernames that begin with a lower 
case letter or an underscore, followed by lower case letters, digits, 
underscores, or dashes. They can *end* with a dollar sign. In regular 
expression terms: [a-z_][a-z0-9_-]*[$]?"

Kind Regards,
Stefan Baur

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