56.6.

openstack orchestration template validate [-h]
                                                 [-f {json,shell,table,value,yaml}]
                                                 [-c COLUMN] [--noindent]
                                                 [--prefix PREFIX]
                                                 [--max-width <integer>]
                                                 [--fit-width] [--print-empty]
                                                 [-e <environment>]
                                                 [--show-nested]
                                                 [--parameter <key=value>]
                                                 [-s <files-container>]
                                                 [--ignore-errors <error1,error2,...>]
                                                 -t <template>