r (Generate Random Password)

This mode operates essentially the same as the g mode, except for the fact that the password is completely randomly generated. It is particularly useful for setting totally random very strong passwords on systems where you do not want to use an account again, for instance, if you want to disable the built-in Administrator account. The options you can use are as follows :

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 Passgen r [-l <desired length>] [-e <desired character set>] [-c <account name> [<old  password>] [-m <machine/domain>] [-d <service name>]] [h] 

Note that the identifier and password parameters are not valid after the r switch. The remaining options function exactly like they do when you use the g master switch. The only required option for this mode is r .