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mas:tldr:38446
mas: Sign into the Mac App Store for the first time.
$ mas signin "${user@example-com}"
try on your machine
The command "mas signin" is a command used in macOS to sign into the Mac App Store using a specific Apple ID.
In this particular command, "${user@example-com}" is a placeholder representing the email address or Apple ID you want to use to sign in to the Mac App Store. This placeholder should be replaced with the actual email address or Apple ID you want to use for signing in.
So, the command is instructing the system to sign in to the Mac App Store using the specified Apple ID or email address.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.