On 22/06/2018 17:05, bin.wang at qkmtech.com wrote: > > where is rtems_shell_execute_cmd function defined? > You can search the headers with: $ grep -r rtems_shell_execute_cmd cpukit/include It is here: https://git.rtems.org/rtems/tree/cpukit/include/rtems/shell.h#n144 Chris