1# help 2 3## Command Function<a name="section991211345413"></a> 4 5This command is used to display all commands in the OS and some Toybox commands. 6 7## Syntax<a name="section19103204016410"></a> 8 9help 10 11## Parameters<a name="section1533416233432"></a> 12 13None 14 15## Usage<a name="section4156445417"></a> 16 17You can run **help** to display all commands in the current OS. 18 19## Example<a name="section12776124712417"></a> 20 21Run **help**. 22 23## Output<a name="section092662412544"></a> 24 25All commands in the system: 26 27``` 28After shell prompt "OHOS # ": 29Use `<cmd> [args ...]` to run built-in shell commands listed above. 30Use `exec <cmd> [args ...]` or `./<cmd> [args ...]` to run external commands. 31 32OHOS:/$ help 33*******************shell commands:************************* 34arp cat cat_logmpp cd chgrp chmod 35chown cp cpup date dhclient dmesg 36dns format free help hi3881 hwi 37ifconfig ipdebug kill log ls lsfd 38memcheck mkdir mount netstat oom panicreset 39partinfo partition ping ping6 pmm pwd 40reset rm rmdir sem shm stack 41statfs su swtmr sync systeminfo task 42telnet touch umount uname v2p vmm 43watch writeproc 44After shell prompt "OHOS # ": 45Use `<cmd> [args ...]` to run built-in shell commands listed above. 46Use `exec <cmd> [args ...]` or `./<cmd> [args ...]` to run external commands. 47*******************toybox commands:************************ 48chgrp chmod chown cp date du free help ifconfig kill ls mkdir mount 49mv ping ps reboot rm rmdir top touch umount uname 50Use `toybox help [command]` to show usage information for a specific command. 51Use `shell` to enter interactive legacy shell. 52Use `alias` to display command aliases. 53``` 54 55