# free ## Command Function This command is used to display the memory usage in the system. ## Syntax free \[_-b | -k | -m | -g | -t_\] ## Parameters **Table 1** Parameter description

Parameter	Description	Value Range
No parameter	Displays the memory usage in bytes.	N/A
--help/-h	Displays the parameters supported by the free command.	N/A
-b	Displays the memory usage in bytes.	N/A
-k	Displays the memory usage in KiB.	N/A
-m	Displays the memory usage in MiB.	N/A
-g	Displays the memory usage in GiB.	N/A
-t	Displays the memory usage in TiB.	N/A

## Usage None ## Example Run **free**, **free -k**, and **free -m**, respectively. ## Output ``` OHOS:/$ free total used free shared buffers Mem: 2819652 2754468 65184 0 0 -/+ buffers/cache: 2754468 65184 Swap: 0 0 0 OHOS:/$ free -k total used free shared buffers Mem: 2753 2692 60 0 0 -/+ buffers/cache: 2692 60 Swap: 0 0 0 OHOS:/$ free -m total used free shared buffers Mem: 2 2 0 0 0 -/+ buffers/cache: 2 0 Swap: 0 0 0 ``` **Table 2** Output

Parameter	Description
total	Total size of the dynamic memory pool
used	Size of the used memory
free	Size of the unallocated memory
shared	Size of the shared memory
buffers	Size of the buffer