1. A method for managing scripts carried out in a script management server which is connected to a user terminal and manages script codes, the method comprising: preparing, by the script management server, a plurality of databases including a meta database and a plurality of script databases, wherein the script management server comprises at least one computing device; designating, by the script management server, an active script database by providing a plurality of original script lists to the user terminal; and storing, by the script management server, identifiers of the user terminal and the designated active script database in the meta database, wherein the plurality of script databases are classified according to script version and each of the plurality of script databases manages the original script code and user-specific script code, and wherein the meta database manages the plurality of original script lists related to the plurality of script databases and a list of user-specific scripts, if a script code in the active script database is updated through the user terminal, updating, by the script management server, a script list and script codes of the corresponding user stored in the meta database and the designated active script database, respectively, wherein the updating a script list and script codes of the corresponding user further comprises, if the script code is updated through the user terminal, updating the script in the plurality of script databases into a script of new version for the corresponding script.