request about scp command (QProcess) using qt
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This is the original source code.
What's wrong?ps) I added two backslashes to the content, but only one is visible.
//-----------------------------------
// header
//-----------------------------------
#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>
#include <QProcess>QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{
Q_OBJECTpublic:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
QProcess *m_process;private slots:
void on_pushButton_clicked();
void readOutput();private:
Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H//----------------------------------------
//cpp
//-----------------------------------------
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <qDebug>MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
}MainWindow::~MainWindow()
{
delete ui;
}void MainWindow::on_pushButton_clicked()
{
m_process = new QProcess(this);
QStringList listArguments;#if 0
QString strParam = "scp";
listArguments << "D:\SVN\Work\test\a.ini user@192.168.1.250:\home\user\SW\";
#else
QString strParam = "ipconfig";
listArguments << "/all";
#endif
connect(m_process, SIGNAL(readyReadStandardError()), this, SLOT(readOutput()));
connect(m_process, SIGNAL(readyReadStandardOutput()), this, SLOT(readOutput()));
connect(m_process, SIGNAL(errorOccurred()), this, SLOT(readOutput()));m_process->start(strParam, listArguments); m_process->waitForFinished(); if(m_process) delete m_process;}
void MainWindow::readOutput()
{
QString StdOut = m_process->readAllStandardOutput();
QString StdError = m_process->readAllStandardError();
QString StdError1 = m_process->errorString();
qDebug() << "======================================\n";
qDebug() << StdOut;
qDebug() << StdError;
qDebug() << StdError1;
qDebug() << "======================================\n";
} -
@hlowd said in request about scp command (QProcess) using qt:
I entered two words in the post, but only one is displayed on the screen...
Use code tags properly, then it will be shown correctly
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listArguments << "D:\\SVN\\Work\\test\\a.ini" << "user@192.168.1.250:/home/user/SW/";
Even though I entered it like this, it is the same.
The response from start comes immediately, but the readOutput function is not called. -
listArguments << "D:\\SVN\\Work\\test\\a.ini" << "user@192.168.1.250:/home/user/SW/";
Even though I entered it like this, it is the same.
The response from start comes immediately, but the readOutput function is not called.@hlowd said in request about scp command (QProcess) using qt:
but the readOutput function is not called
Probably because you're deleting m_process right after waitForFinished.
Are you sure scp.exe command is found?
Try with an absolute path to scp.exe to make sure it is actually found. -
listArguments << "D:\\SVN\\Work\\test\\a.ini" << "user@192.168.1.250:/home/user/SW/";
Even though I entered it like this, it is the same.
The response from start comes immediately, but the readOutput function is not called. -
The symptom is the same even if delete is not called.
If it is a command instruction rather than a code, the instruction will be executed normally.
The file is moved normally. (Windows -> Linux) -
The symptom is the same even if delete is not called.
If it is a command instruction rather than a code, the instruction will be executed normally.
The file is moved normally. (Windows -> Linux)@hlowd
There are files in that path.C:\Windows\WinSxS\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb scp.exe ssh-add.exe ssh-agent.exe ssh-keygen.exe// new code
QString strParam = "C:\\Windows\\WinSxS\\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb\\scp.exe";// error message
"CreateProcessW failed error:2 posix_spawn: No such file or directory" -
@hlowd
There are files in that path.C:\Windows\WinSxS\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb scp.exe ssh-add.exe ssh-agent.exe ssh-keygen.exe// new code
QString strParam = "C:\\Windows\\WinSxS\\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb\\scp.exe";// error message
"CreateProcessW failed error:2 posix_spawn: No such file or directory"@hlowd
If you want help on this, at least for my part, please make the effort to enclose your code blocks and literal extracts in the forums block quotes (</>button) as we have asked several times. It does not require much effort on your side.By now you should be trying a command of
scp, nothing else, no arguments, to verify that (a) it is found and can be run and (b) you can successfully read any output from it, e.g. presumably a "usage" message in this case. -
@hlowd
There are files in that path.C:\Windows\WinSxS\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb scp.exe ssh-add.exe ssh-agent.exe ssh-keygen.exe// new code
QString strParam = "C:\\Windows\\WinSxS\\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb\\scp.exe";// error message
"CreateProcessW failed error:2 posix_spawn: No such file or directory"@hlowd said in request about scp command (QProcess) using qt:
Can I do it this way?
Yes, just try.
I would also execute scp using this absolute path in a terminal to make sure it works. -
@hlowd said in request about scp command (QProcess) using qt:
Can I do it this way?
Yes, just try.
I would also execute scp using this absolute path in a terminal to make sure it works.There are files in that path.
C:\Windows\WinSxS\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb scp.exe ssh-add.exe ssh-agent.exe ssh-keygen.exe// new code
QString strParam = "C:\\Windows\\WinSxS\\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb\\scp.exe";// error message
"CreateProcessW failed error:2 posix_spawn: No such file or directory"The same error occurs in the command prompt.
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There are files in that path.
C:\Windows\WinSxS\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb scp.exe ssh-add.exe ssh-agent.exe ssh-keygen.exe// new code
QString strParam = "C:\\Windows\\WinSxS\\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb\\scp.exe";// error message
"CreateProcessW failed error:2 posix_spawn: No such file or directory"The same error occurs in the command prompt.
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There are files in that path.
C:\Windows\WinSxS\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb scp.exe ssh-add.exe ssh-agent.exe ssh-keygen.exe// new code
QString strParam = "C:\\Windows\\WinSxS\\amd64_openssh-common-components-onecore_31bf3856ad364e35_10.0.22621.1_none_1e3c4880a37d88bb\\scp.exe";// error message
"CreateProcessW failed error:2 posix_spawn: No such file or directory"The same error occurs in the command prompt.
@hlowd Did scp executable ever work for you in terminal? The path where it is located looks strange, don't know from where it comes. On my machine I have it here: c:\windows\System32\OpenSSH\scp.exe
You can check where your scp.exe is located using this command:
where scp -
@hlowd Did scp executable ever work for you in terminal? The path where it is located looks strange, don't know from where it comes. On my machine I have it here: c:\windows\System32\OpenSSH\scp.exe
You can check where your scp.exe is located using this command:
where scp -
The scp.exe file exists in that path.
C:\Windows\System32\OpenSSHI don't know why I couldn't find it using Explorer search.
@hlowd said in request about scp command (QProcess) using qt:
The scp.exe file exists in that path
Does it work with this path?
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@hlowd said in request about scp command (QProcess) using qt:
The scp.exe file exists in that path
Does it work with this path?
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@hlowd
This really should not be too difficult to diagnose, if you stick to what is suggested and report behaviour.First try both of
scp \full\path\to\scpin a Command Prompt. I assume at least one "works", and produces a "usage" output message?
Whichever produces the message, now try from a Qt program
QProcess proc; proc.start("....."); // here try whichever worked in Command Prompt qDebug() << proc.waitForFinished(); qDebug() << proc.readAll();and report output.
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@hlowd
This really should not be too difficult to diagnose, if you stick to what is suggested and report behaviour.First try both of
scp \full\path\to\scpin a Command Prompt. I assume at least one "works", and produces a "usage" output message?
Whichever produces the message, now try from a Qt program
QProcess proc; proc.start("....."); // here try whichever worked in Command Prompt qDebug() << proc.waitForFinished(); qDebug() << proc.readAll();and report output.
it works(data is output)
- output 1 : true
- output 2 : "\r\nWindows IP ....."
QProcess proc; proc.start("ipconfig /all"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll();do not Working
- output 1 : false
- output 2 : ""
QProcess proc; proc.start("scp C:\\Users\\user\\a.ini user@192.168.1.250:/home/user/SW/"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll();this is also do not working
- output 1 : false
- output 2 : ""
QProcess proc; proc.start("C:\\Windows\\System32\\OpenSSH\\scp.exe C:\\Users\\user\\a.ini user@192.168.1.250:/home/user/SW/"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll(); -
it works(data is output)
- output 1 : true
- output 2 : "\r\nWindows IP ....."
QProcess proc; proc.start("ipconfig /all"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll();do not Working
- output 1 : false
- output 2 : ""
QProcess proc; proc.start("scp C:\\Users\\user\\a.ini user@192.168.1.250:/home/user/SW/"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll();this is also do not working
- output 1 : false
- output 2 : ""
QProcess proc; proc.start("C:\\Windows\\System32\\OpenSSH\\scp.exe C:\\Users\\user\\a.ini user@192.168.1.250:/home/user/SW/"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll(); -
it works(data is output)
- output 1 : true
- output 2 : "\r\nWindows IP ....."
QProcess proc; proc.start("ipconfig /all"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll();do not Working
- output 1 : false
- output 2 : ""
QProcess proc; proc.start("scp C:\\Users\\user\\a.ini user@192.168.1.250:/home/user/SW/"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll();this is also do not working
- output 1 : false
- output 2 : ""
QProcess proc; proc.start("C:\\Windows\\System32\\OpenSSH\\scp.exe C:\\Users\\user\\a.ini user@192.168.1.250:/home/user/SW/"); qDebug() << "output 1 : " << proc.waitForFinished(); qDebug() << "output 2 : " << proc.readAll();@hlowd said in request about scp command (QProcess) using qt:
proc.start("scp C:\Users\user\a.ini user@192.168.1.250:/home/user/SW/");
You need argument list for
QProcess
The whole statement instartwont work.Here in your similar topic is an example by @ChrisW67 and me..
