1e41f4b71Sopenharmony_ci# date 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 命令功能 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_cidate命令用于查询系统日期和时间。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci## 命令格式 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ci- date 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci- date --help 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci- date +[_Format_] 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci- date -u 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci## 参数说明 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci**表1** 参数说明 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci| 参数 | 参数说明 | 取值范围 | 25e41f4b71Sopenharmony_ci| ------- | ------------------------------ | ---------------------- | 26e41f4b71Sopenharmony_ci| --help | 使用帮助。 | N/A | 27e41f4b71Sopenharmony_ci| +Format | 根据Format格式打印日期和时间。 | --help中列出的占位符。 | 28e41f4b71Sopenharmony_ci| -u | 显示UTC，而不是当前时区 | N/A | 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci## 使用指南 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci- date参数缺省时，默认显示系统UTC日期和时间。 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci- --help、+Format、-u不能混合使用。 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ci- 目前命令不支持设置时间和日期。 38e41f4b71Sopenharmony_ci 39e41f4b71Sopenharmony_ci## 特殊说明 40e41f4b71Sopenharmony_ci 41e41f4b71Sopenharmony_cidate -u参数 shell端暂不支持。切换mksh版本可全支持，方法：cd bin; ./mksh。 42e41f4b71Sopenharmony_ci 43e41f4b71Sopenharmony_ci## 使用实例 44e41f4b71Sopenharmony_ci 45e41f4b71Sopenharmony_ci举例：输入 date +%Y--%m--%d 46e41f4b71Sopenharmony_ci 47e41f4b71Sopenharmony_ci 48e41f4b71Sopenharmony_ci## 输出说明 49e41f4b71Sopenharmony_ci 50e41f4b71Sopenharmony_ci示例：按指定格式打印系统日期 51e41f4b71Sopenharmony_ci 52e41f4b71Sopenharmony_ci 53e41f4b71Sopenharmony_ci``` 54e41f4b71Sopenharmony_ciOHOS:/$ date +%Y--%m--%d 55e41f4b71Sopenharmony_ci1970--01--01 56e41f4b71Sopenharmony_ci```