1e41f4b71Sopenharmony_ci# exec 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 命令功能 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ciexec命令属于shell内置命令，在exec执行命令时，不启用新的shell进程。目前实现最基础的执行用户态程序的功能 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci## 命令格式 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciexec <_executable-file_> 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci## 参数说明 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci**表1** 参数说明 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci| 参数 | 参数说明 | 19e41f4b71Sopenharmony_ci| --------------- | ------------------ | 20e41f4b71Sopenharmony_ci| executable-file | 有效的可执行文件。 | 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci## 使用指南 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci该命令当前仅支持执行有效的二进制程序，程序成功执行，默认后台运行，但与Shell共用终端，可能会导致程序打印输出与Shell输出交错显示。 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci## 使用实例 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci举例： 31e41f4b71Sopenharmony_ci 32e41f4b71Sopenharmony_ci输入exec helloworld。 33e41f4b71Sopenharmony_ci 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci## 输出说明 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ci 38e41f4b71Sopenharmony_ci``` 39e41f4b71Sopenharmony_ciOHOS # exec helloworld 40e41f4b71Sopenharmony_ciOHOS # hello world! 41e41f4b71Sopenharmony_ci``` 42e41f4b71Sopenharmony_ci 43e41f4b71Sopenharmony_ci>  **说明：** 44e41f4b71Sopenharmony_ci> 可执行文件执行后，先打印“OHOS \#”提示符原因：目前Shell “exec”命令执行均为后台执行，结果可能导致提示符提前打印。
