1# help 2 3 4## Command Function 5 6This command is used to display all commands in the OS and some Toybox commands. 7 8 9## Syntax 10 11help 12 13 14## Parameters 15 16None. 17 18 19## Usage Guidelines 20 21You can run **help** to display all commands in the current OS. 22 23 24## Example 25 26Run **help**. 27 28 29## Output 30 31All commands in the system: 32 33 34``` 35After shell prompt "OHOS # ": 36Use `<cmd> [args ...]` to run built-in shell commands listed above. 37Use `exec <cmd> [args ...]` or `./<cmd> [args ...]` to run external commands. 38 39OHOS:/$ help 40***shell commands:* 41arp cat cat_logmpp cd chgrp chmod 42chown cp cpup date dhclient dmesg 43dns format free help hi3881 hwi 44ifconfig ipdebug kill log ls lsfd 45memcheck mkdir mount netstat oom panicreset 46partinfo partition ping ping6 pmm pwd 47reset rm rmdir sem shm stack 48statfs su swtmr sync systeminfo task 49telnet touch umount uname v2p vmm 50watch writeproc 51After shell prompt "OHOS # ": 52Use `<cmd> [args ...]` to run built-in shell commands listed above. 53Use `exec <cmd> [args ...]` or `./<cmd> [args ...]` to run external commands. 54***toybox commands: 55chgrp chmod chown cp date du free help ifconfig kill ls mkdir mount 56mv ping ps reboot rm rmdir top touch umount uname 57Use `toybox help [command]` to show usage information for a specific command. 58Use `shell` to enter interactive legacy shell. 59Use `alias` to display command aliases. 60``` 61