QProcess ssh call not see the output but is ok on linux terminal

gfxx

hi,

a little problem ... I use these string in terminal linux:

ssh b@119.204.0.122 /home/b/file.py  pippo.txt

an these retun me the position on remote pc of file pippo.txt ... it's all right in linux terminal, but when i use QProcess the output is blank row ...

I use an other QProcess with "scp" command to copy pippo.txt on remote pc and it work fine. After any start there is a close after these example:

    QString PGRnameload;
    ConnectionLoad = new QProcess();
    ConnectionLoad->start("/bin/sh", QStringList() << "-c" << " ssh b@119.204.0.122 /home/b/file.py pippo.txt ;"); /*if try to leave ';' is the same*/
    ConnectionLoad->waitForStarted(1500);
    ConnectionLoad->waitForFinished(1500);
    PGRnameload = ConnectionLoad->readAllStandardOutput().simplified();
    ui->ErrorString->append(PGRnameload);
    ui->m1lineEdit->setText(PGRnameload);
    ConnectionLoad->close();

appreciate any suggst.

regards
giorgio

jsulm

@gfxx Should be

ConnectionLoad->start("/bin/sh", QStringList() << "-c" << "ssh" << "b@119.204.0.122"<< "/home/b/file.py" << "pippo.txt;");

Also you do not need to use sh:

ConnectionLoad->start("ssh", QStringList() << "b@119.204.0.122"<< "/home/b/file.py" << "pippo.txt;");

gfxx

sorry not work

regards
giorgio

VRonin

You are using the API wrong

QString* PGRnameload=new QString;
    QProcess* ConnectionLoad = new QProcess(this); // local variable works
connect(ConnectionLoad,&QProcess::readyReadStandardOutput,ConnectionLoad,[PGRnameload,ConnectionLoad]()->void{ PGRnameload->append(QString::fromLatin1(ConnectionLoad->readAllStandardOutput()));});
connect(ConnectionLoad,&QProcess::readyReadStandardError,ConnectionLoad,[PGRnameload,ConnectionLoad]()->void{ PGRnameload->append(QString::fromLatin1(ConnectionLoad->readAllStandardError()));});
connect(ConnectionLoad, static_cast<void(QProcess::*)(int, QProcess::ExitStatus)>(&QProcess::finished),ConnectionLoad,&QProcess::deleteLater);
connect(ConnectionLoad, static_cast<void(QProcess::*)(int, QProcess::ExitStatus)>(&QProcess::finished),this,
    [PGRnameload,this](){ ui->ErrorString->append(*PGRnameload); ui->m1lineEdit->setText(*PGRnameload); delete PGRnameload; });
    ConnectionLoad->start("ssh", QStringList() << "b@119.204.0.122"<< "/home/b/file.py" << "pippo.txt");

gfxx

Hi VRonin ... why you use all these lambda functions?

then:

QProcess* ConnectionLoad

I declare it private.

Any how not undestand your code and it return me a lot of error ... surely the code itself works well it's just that I do not understand it so I do not understand how to fix the errors.
For example why a static_cast to qprocess??

and where is my error in my original code? TANKS A LOT

mmm ... the problem is the time when I capture the output?
regards
giorgio

gfxx

@VRonin ... hoops it works ... and now I study better the lambda usage in these way.

then use these:

ConnectionLoad->start("ssh", QStringList() << "b@119.204.0.122"<< "/home/b/file.py" << "pippo.txt");

or these:

QString Stringload = " ssh b@119.204.0.122 /home/b/file.py pippo.txt";
ConnectionLoad->start("/bin/sh", QStringList() << "-c" << QString(Stringload ));

is the same

regards
giorgio