Syntax - TfsBuild definition /new /collection:teamProjectCollectionUrl /name:name /teamProject:project /buildProcess:file ...

Syntax -
TfsBuild definition /new /collection:teamProjectCollectionUrl /name:name
                    /teamProject:project [/buildProcess:file]
                    [/dropLocation:uncPath] [/buildController:controller]
                    [/description:description] [/enabled:(true|false)]
                    [/retentionPolicies:file] [/workspace:file]

    or
TfsBuild definition /delete /collection:teamProjectCollectionUrl
                    /buildDefinitionUri:uri

    or
TfsBuild definition /delete /collection:teamProjectCollectionUrl
                    buildDefinitionSpec

    or
TfsBuild definition /display /collection:teamProjectCollectionUrl
                    buildDefinitionSpec [buildDefinitionSpec ...]