命令"/>
【Qt】Linux代码中调用shell命令
1. system()
- 来源:Linux C函数库
- 阻塞
- 程序无法获取指令返回的内容,只返回成功与否
int ret = system("ls");
qDebug()<<"ret:" <<ret;
2. QProcess::start(),QProcess::waitForFinished()
start()
非阻塞,但是waitForFinished()
阻塞- 有时也可以和
connect finished
联合使用
#include <QProcess>QProcess process;
process.start("ls",QStringList()<< "/usr/local");
process.waitForFinished();
// connect(&process, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished),
// [=](int exitCode, QProcess::ExitStatus exitStatus){ qDebug()<<"-----"; });
QString result = process.readAllStandardOutput();
qDebug()<<"result:\n" <<result;//结果
result:
"bin\ncuda\ncuda-12\ncuda-12.1\ndoc\n"
3. QProcess::execute()
- 阻塞
- 执行结果与system()类似
- 执行结果无法在程序中获得
QProcess process;int ret = process.execute("lsb_release", QStringList()<< "-d");qDebug()<<"ret:" <<ret;
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【Qt】Linux代码中调用shell命令
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