1e41f4b71Sopenharmony_ci# free 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 命令功能 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_cifree命令可显示系统内存的使用情况。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci## 命令格式 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_cifree [_-b | -k | -m | -g | -t_] 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| 无参数 | 以Byte为单位显示。 | 21e41f4b71Sopenharmony_ci| --help/-h | 查看free命令支持的参数列表。 | 22e41f4b71Sopenharmony_ci| -b | 以Byte为单位显示。 | 23e41f4b71Sopenharmony_ci| -k | 以KiB为单位显示。 | 24e41f4b71Sopenharmony_ci| -m | 以MiB为单位显示。 | 25e41f4b71Sopenharmony_ci| -g | 以GiB为单位显示。 | 26e41f4b71Sopenharmony_ci| -t | 以TiB为单位显示。 | 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci 29e41f4b71Sopenharmony_ci## 使用指南 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci无。 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci 34e41f4b71Sopenharmony_ci## 使用实例 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ci举例：分别输入free、free -k、free -m. 37e41f4b71Sopenharmony_ci 38e41f4b71Sopenharmony_ci 39e41f4b71Sopenharmony_ci## 输出说明 40e41f4b71Sopenharmony_ci 41e41f4b71Sopenharmony_ci 42e41f4b71Sopenharmony_ci``` 43e41f4b71Sopenharmony_ciOHOS:/$ free 44e41f4b71Sopenharmony_ci total used free shared buffers 45e41f4b71Sopenharmony_ciMem: 2819652 2754468 65184 0 0 46e41f4b71Sopenharmony_ci-/+ buffers/cache: 2754468 65184 47e41f4b71Sopenharmony_ciSwap: 0 0 0 48e41f4b71Sopenharmony_ciOHOS:/$ free -k 49e41f4b71Sopenharmony_ci total used free shared buffers 50e41f4b71Sopenharmony_ciMem: 2753 2692 60 0 0 51e41f4b71Sopenharmony_ci-/+ buffers/cache: 2692 60 52e41f4b71Sopenharmony_ciSwap: 0 0 0 53e41f4b71Sopenharmony_ciOHOS:/$ free -m 54e41f4b71Sopenharmony_ci total used free shared buffers 55e41f4b71Sopenharmony_ciMem: 2 2 0 0 0 56e41f4b71Sopenharmony_ci-/+ buffers/cache: 2 0 57e41f4b71Sopenharmony_ciSwap: 0 0 0 58e41f4b71Sopenharmony_ci``` 59e41f4b71Sopenharmony_ci 60e41f4b71Sopenharmony_ci**表2** 输出说明 61e41f4b71Sopenharmony_ci 62e41f4b71Sopenharmony_ci| 输出 | 说明 | 63e41f4b71Sopenharmony_ci| -------- | -------- | 64e41f4b71Sopenharmony_ci| total | 表示系统动态内存池总量。 | 65e41f4b71Sopenharmony_ci| used | 表示已使用内存总量。 | 66e41f4b71Sopenharmony_ci| free | 表示未被分配的内存大小。 | 67e41f4b71Sopenharmony_ci| shared | 表示共享内存大小。 | 68e41f4b71Sopenharmony_ci| buffers | 表示缓冲区内存大小。 | 69