exec.md

exec

Command Function

This command is a built-in shell command used to execute user-space programs.

Syntax

exec <executable-file>

Parameter Description

Table 1 Parameters

Parameter	Description	Value Range
executable-file	Indicates a valid executable file.	N/A

Usage

Currently, this command supports only valid binary programs. The programs are successfully executed and then run in the background by default. However, the programs share the same device with the shell. As a result, the output of the programs and the shell may be interlaced.

Example

Enter exec helloworld.

Output

OHOS # exec helloworld
OHOS # hello world!

NOTE: After the executable file is executed, prompt OHOS # is printed first. The shell exec command is executed in the background, causing the prompt to be printed in advance.