composer中文镜像配置失败！帮忙看看

Question

bogon:~ apple$ composer config -g repo.packagist                                              [InvalidArgumentException]                  There is no packagist repository defined                                              config [-g|--global] [-e|--editor] [-a|--auth] [--unset] [-l|--list] [-f|--file FILE] [--absolute] [--] [<setting-key>] [<setting-value>]...bogon:~ apple$ composer config -g repo.packagist composer https://packagist.phpcomposer.combogon:~ apple$ composer config -g repo.packagist                                              [InvalidArgumentException]                  There is no packagist repository defined                                              config [-g|--global] [-e|--editor] [-a|--auth] [--unset] [-l|--list] [-f|--file FILE] [--absolute] [--] [<setting-key>] [<setting-value>]...bogon:~ apple$ config -gl-bash: config: command not foundbogon:~ apple$ composer config -g repo.packagist composer https://packagist.phpcomposer.combogon:~ apple$ composer config -g repo.packagist                                              [InvalidArgumentException]                  There is no packagist repository defined                                              config [-g|--global] [-e|--editor] [-a|--auth] [--unset] [-l|--list] [-f|--file FILE] [--absolute] [--] [<setting-key>] [<setting-value>]...bogon:~ apple$ composer config -g repo.packagist composer https://packagist.phpcomposer.combogon:~ apple$ config -gl-bash: config: command not foundbogon:~ apple$ 在mac操作系统下我在命令行里输入相应命令时请问我这边怎么都是 not found呀？都找不到这个东西存在。是不是哪里没配置好还是怎么滴？帮忙帮忙呀！xiexie !