How to add a button that runs a command line in Raspbian terminal ?

[imene]

Hello,
i want to run this line in raspbian Terminal to activate PiCAN raspberry pi module:

pi@raspberrypi:~ $ sudo /sbin/ip link set can0 up type can bitrate 1000000 loopback on

How can i do it ?
Qt5-12

[JonB]

@imene
Use QProcess.

[imene]

I've tried this code but he didn't found the command:
from(https://forum.qt.io/topic/113592/run-command-line-from-qt-app-in-linux/6)
void ConnectDialog::on_Connect_Button_clicked()
{
using namespace std;
qDebug()<<"checking the use of ls in qt * \n";
QProcess process;
process.setWorkingDirectory("/home/pi");

QString Command;    //Contains the command to be executed
QStringList args;   //Contains arguments of the command

Command = "sudo";
args<<"/sbin/ip link set can0 up type can bitrate 1000000 loopback on"<<"/home/pi";
qDebug()<<"Home cmd"<<Command;
qDebug()<<"Home args"<<args;
process.start(Command, args, QIODevice::ReadOnly); //Starts execution of command

process.waitForFinished();
QString StdOut = process.readAllStandardOutput(); //Reads standard output
qDebug()<<"\n Printing the standard output..........\n";
// invalid //
qDebug()<<StdOut;

//cout<<"\n Printing the standard error..........\n";
QString StdError    =   process.readAllStandardError();   //Reads standard error
qDebug()<<StdError;

}

[JonB]

@imene said in How to add a button that runs a command line in Raspbian terminal ?:

args<<"/sbin/ip link set can0 up type can bitrate 1000000 loopback on"<<"/home/pi";

This is quite wrong. In no way is /sbin/ip link set can0 up type can bitrate 1000000 loopback on a single argument!

Either

• Every one of those space-separated words is a separate argument, like args << "/sbin/ip" << "link" << "set" << ....; or
• Use /bin/sh as the command and args << "-c" << "sudo /sbin/ip link set can0 up type can bitrate 1000000 loopback on".

[imene]

@JonB Great it works now !

    Command = "sudo";
    args << "/sbin/ip" << "link" << "set" << "can0" << "up" << "type" << "can" << "bitrate" << "1000000" << "loopback" <<"on";

Thanks a lot !