// Copyright (C) 2016 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause void wrapInFunction() { //! [0] 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(); //! [0] //! [1] QProcess more; more.start("more"); more.write("Text to display"); more.closeWriteChannel(); // QProcess will emit readyRead() once "more" starts printing //! [1] //! [2] command1 | command2 //! [2] //! [3] QProcess process1; QProcess process2; process1.setStandardOutputProcess(&process2); process1.start("command1"); process2.start("command2"); //! [3] //! [4] 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(); } //! [4] //! [5] QProcess process; process.startCommand("del /s *.txt"); // same as process.start("del", QStringList() << "/s" << "*.txt"); ... //! [5] //! [6] QProcess process; process.startCommand("dir \"My Documents\""); //! [6] //! [7] QProcess process; process.startCommand("dir \"Epic 12\"\"\" Singles\""); //! [7] //! [8] QStringList environment = QProcess::systemEnvironment(); // environment = {"PATH=/usr/bin:/usr/local/bin", // "USER=greg", "HOME=/home/greg"} //! [8] }