从C ++执行bash脚本并读取其输出ubuntu sdk

Question

I have a ubuntu application and I'm trying to execute bash scripts from it but it doesn't seem to be working. I tried doing this with system()

    #include <stdio.h>
    #include <stdlib.h>
    #include <unistd.h>

    int main(int argc, char *argv[])
    {
// tried both
        system("./script.sh");
       // system ("script.sh")

    }

Also, i've tried researching this but did not find a solution; is it possible to also read the output and display in textbox.

Answer 1

Use popen() .

FILE *script;
char line[LINESIZE];
script = popen("./script.sh", "r");
while (fgets(line, sizeof(line), script)) {
    ...
}
pclose(script);

It's not relevant that you're running a script. This will work with any shell command.

Answer 2

For anyone looking to do this in QT, here's what i did:

 QProcess proc;

        proc.start("gnome-terminal", QIODevice::ReadWrite);

        if (proc.waitForStarted() == false) {
            qDebug() << "Error starting terminal process";
            qDebug() << proc.errorString();

            return (-1);
        }