src_corelib_io_qprocess.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
 
void wrapInFunction()
{
 
QProcess builder;
builder.setProcessChannelMode(QProcess::MergedChannels);
builder.start("make", QStringList() << "-j2");
 
if (!builder.waitForFinished())
    qDebug() << "Make failed:" << builder.errorString();
else
    qDebug() << "Make output:" << builder.readAll();
 
 
QProcess more;
more.start("more");
more.write("Text to display");
more.closeWriteChannel();
// QProcess will emit readyRead() once "more" starts printing
 
 
command1 | command2
 
 
QProcess process1;
QProcess process2;
 
process1.setStandardOutputProcess(&process2);
 
process1.start("command1");
process2.start("command2");
 
 
void runSandboxed(const QString &name, const QStringList &arguments)
{
    QProcess proc;
    proc.setChildProcessModifier([] {
        // Drop all privileges in the child process, and enter
        // a chroot jail.
        ::setgroups(0, nullptr);
        ::chroot("/run/safedir");
        ::chdir("/");
        ::setgid(safeGid);
        ::setuid(safeUid);
        ::umask(077);
    });
    proc.start(name, arguments);
    proc.waitForFinished();
}
 
 
QProcess process;
process.startCommand("del /s *.txt");
// same as process.start("del", QStringList() << "/s" << "*.txt");
...
 
 
QProcess process;
process.startCommand("dir \"My Documents\"");
 
 
QProcess process;
process.startCommand("dir \"Epic 12\"\"\" Singles\"");
 
 
QStringList environment = QProcess::systemEnvironment();
// environment = {"PATH=/usr/bin:/usr/local/bin",
//                "USER=greg", "HOME=/home/greg"}
 
}