How to run a system command in Qt?

Question

I have to run a system command in Qt, but I have to give an argument for that command.

for example opening a text file with gedit:

gedit /home/oDx/Documents/a.txt"

but the path /home/oDx/Documents/a.txt will be in a variable like docPath.

How can I achieve this?

Answer 1

QProcess process;
process.start("gedit", QStringList() << docPath);

the same as above

QProcess process;
process.start("gedit", QStringList() << "/home/oDx/Documents/a.txt");

Also, read this.

Answer 2

QProcess::execute() may be helpful, although is deprecated:

QProcess::execute("gedit /home/oDx/Documents/a.txt");

Answer 3

As of Qt 6.0, you can use QProcess::startCommand:

QProcess process;
process.startCommand("gedit /home/oDx/Documents/a.txt");