隐藏c ++的输出同时在c ++中执行Linux shell命令

Question

I want to execute a Linux shell command from "/sbin/" with execl or system (or another command), and hide its output.

I am using "fork" already to get a child process...

Like if I entered...

service "servicename" restart

I would see the output where it says "restarting xyz [OK]". Instead, I simply want the command to be executed silently and its output discarded instead of being shown in my console application.

Answer 1

You could append this to your command: " > /dev/null 2>&1 "

So your command becomes: service [servicename] restart > /dev/null 2>&1

What this does is that it redirects stderr to stdout (2>&1), and redirects stdout to /dev/null ( > /dev/null)

Answer 2

Redirect the output to /dev/null

Eg.,

service smb restart 1> /dev/null

service smb restart 2> /dev/null

where 1 and 2 represents the stdout and stderr