Motorola P-7131N-FGR Product Reference Manual page 541

AP7131N>admin(system.userdb.user)>mgmt-set
Description:
Sets the password for management user.
Syntax:
mgmt-set <user> <pw>
Example:
admin(system.userdb.user>mgmt-set john motorola123
admin(system.userdb.user>
Sets a user <id> and password <pw> string (8-19 characters) for a specific management user.
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CLI Reference