1# cd 2 3 4## Command Function 5 6This command is used to change the current working directory. 7 8 9## Syntax 10 11cd [_path_] 12 13 14## Parameters 15 16**Table 1** Parameter description 17 18| Parameter| Description| Value Range| 19| -------- | -------- | -------- | 20| path | Specifies the path of the new directory. | You must have the execution (search) permission on the specified directory.| 21 22 23## Usage Guidelines 24 25- If **path** is not specified, this command switches to the root directory. 26 27- If **path** is specified, this command switches to the specified directory. 28 29- The **path** value starting with a slash (/) represents the root directory. 30 31- The **path** value starting with a dot (.) represents the current directory. 32 33- The **path** value starting with two dots (..) represents the parent directory. 34 35- You can run **cd -** to alternate between two directories that are recently accessed. 36 37 38## Example 39 40Run **cd ..**. 41 42 43## Output 44 45Parent directory information: 46 47``` 48OHOS:/nfs$ cd ../ 49OHOS:/$ ls 50bin etc nfs sdcard system tmp vendor 51dev lib proc storage test usr 52``` 53