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Can't get QProcess to work.. using cygwin and rsync

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  • JonBJ JonB

    @roygual
    You should check for errors, and more particularly read anything from stderr/stdout.

    You are using a relative path to the executable, cygwin64/rsync.exe. How do you know what the current directory is, and whether it can find that?

    and works just fine on windows terminal

    Depends what the current directory was.

    R Offline
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    roygual
    wrote on last edited by
    #3
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    • R roygual

      This post is deleted!

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      roygual
      wrote on last edited by roygual
      #4
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      • JonBJ JonB

        @roygual
        You should check for errors, and more particularly read anything from stderr/stdout.

        You are using a relative path to the executable, cygwin64/rsync.exe. How do you know what the current directory is, and whether it can find that?

        and works just fine on windows terminal

        Depends what the current directory was.

        R Offline
        R Offline
        roygual
        wrote on last edited by roygual
        #5
        This post is deleted!
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        • JonBJ JonB

          @roygual
          You should check for errors, and more particularly read anything from stderr/stdout.

          You are using a relative path to the executable, cygwin64/rsync.exe. How do you know what the current directory is, and whether it can find that?

          and works just fine on windows terminal

          Depends what the current directory was.

          R Offline
          R Offline
          roygual
          wrote on last edited by roygual
          #6
          This post is deleted!
          1 Reply Last reply
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          • JonBJ JonB

            @roygual
            You should check for errors, and more particularly read anything from stderr/stdout.

            You are using a relative path to the executable, cygwin64/rsync.exe. How do you know what the current directory is, and whether it can find that?

            and works just fine on windows terminal

            Depends what the current directory was.

            R Offline
            R Offline
            roygual
            wrote on last edited by
            #7

            @JonB
            it was just a bunch of little mistakes typical of an amateur like me

            here de correct and working code

            QStringList arguments;
            
            arguments <<"-r"<<"/cygdrive/x/Users/Roy/Desktop/uno/"<<"/cygdrive/x/Users/Roy/Desktop/dos/";
            
            QProcess *myProcess = new QProcess();
            myProcess->start("cygwin64/rsync.exe", arguments);
            
            
            myProcess->waitForFinished(-1);
            QString out = myProcess->readAllStandardOutput();
            QString error = myProcess->readAllStandardError();
            qDebug()<<out;
            qDebug()<<error;
            

            Thank you very much for your help!!

            JonBJ 1 Reply Last reply
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            • R roygual

              @JonB
              it was just a bunch of little mistakes typical of an amateur like me

              here de correct and working code

              QStringList arguments;
              
              arguments <<"-r"<<"/cygdrive/x/Users/Roy/Desktop/uno/"<<"/cygdrive/x/Users/Roy/Desktop/dos/";
              
              QProcess *myProcess = new QProcess();
              myProcess->start("cygwin64/rsync.exe", arguments);
              
              
              myProcess->waitForFinished(-1);
              QString out = myProcess->readAllStandardOutput();
              QString error = myProcess->readAllStandardError();
              qDebug()<<out;
              qDebug()<<error;
              

              Thank you very much for your help!!

              JonBJ Online
              JonBJ Online
              JonB
              wrote on last edited by
              #8

              @roygual said in Can't get QProcess to work.. using cygwin and rsync:

              myProcess->start("cygwin64/rsync.exe", arguments);

              I still say: How do you know what the current working directory is when your program is run for it to find the executable via a relative path cygwin64/rsync.exe? If, say, you cd \windows before running your Qt application or "copied & paste and works just fine on windows terminal" what happens?

              Your final code "leaks" the QProcess from QProcess *myProcess = new QProcess();.

              R 1 Reply Last reply
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              • JonBJ JonB

                @roygual said in Can't get QProcess to work.. using cygwin and rsync:

                myProcess->start("cygwin64/rsync.exe", arguments);

                I still say: How do you know what the current working directory is when your program is run for it to find the executable via a relative path cygwin64/rsync.exe? If, say, you cd \windows before running your Qt application or "copied & paste and works just fine on windows terminal" what happens?

                Your final code "leaks" the QProcess from QProcess *myProcess = new QProcess();.

                R Offline
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                roygual
                wrote on last edited by roygual
                #9

                @JonB

                My idea is to move the program folder one place to another, portable; copy the app folder to one computer to another or move it with a thumbdrive the cygwin64 folders is in the app folder and next to the executable ,
                to my understand this path always start from the executable is, .. is "relative" to the executable

                cd \windows and copy/paste to other locations, even on usb, double click or terminal.. works.

                I'm a total novice, if I'm doing a bad practice I would be very grateful if you correct me.

                talking about bad practices

                QProcess *myProcess = new QProcess(this);
                
                JonBJ 1 Reply Last reply
                0
                • R roygual

                  @JonB

                  My idea is to move the program folder one place to another, portable; copy the app folder to one computer to another or move it with a thumbdrive the cygwin64 folders is in the app folder and next to the executable ,
                  to my understand this path always start from the executable is, .. is "relative" to the executable

                  cd \windows and copy/paste to other locations, even on usb, double click or terminal.. works.

                  I'm a total novice, if I'm doing a bad practice I would be very grateful if you correct me.

                  talking about bad practices

                  QProcess *myProcess = new QProcess(this);
                  
                  JonBJ Online
                  JonBJ Online
                  JonB
                  wrote on last edited by
                  #10

                  @roygual said in Can't get QProcess to work.. using cygwin and rsync:

                  cd \windows and copy/paste to other locations, even on usb, double click or terminal.. works.

                  I don't understand since you show you are running executable via relative path cygwin64/rsync.exe. But that works for you somehow.

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                  • JonBJ JonB

                    @roygual said in Can't get QProcess to work.. using cygwin and rsync:

                    cd \windows and copy/paste to other locations, even on usb, double click or terminal.. works.

                    I don't understand since you show you are running executable via relative path cygwin64/rsync.exe. But that works for you somehow.

                    R Offline
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                    roygual
                    wrote on last edited by
                    #11

                    @JonB
                    Hello
                    Tested on a second PC win11, with Qt installed but did not build or used with qtcreator, .... copied the folder to desktop and run the binary with double click... still working fine.

                    I'll test with win 10 on other pc.

                    regards

                    JonBJ 1 Reply Last reply
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                    • R roygual

                      @JonB
                      Hello
                      Tested on a second PC win11, with Qt installed but did not build or used with qtcreator, .... copied the folder to desktop and run the binary with double click... still working fine.

                      I'll test with win 10 on other pc.

                      regards

                      JonBJ Online
                      JonBJ Online
                      JonB
                      wrote on last edited by
                      #12

                      @roygual
                      It's nothing to do with how you build or what machine you test it on. It's: how is windows locating the relative path cygwin64/rsync.exe you either span from your Qt program or type into a Command Prompt, without relying on whatever the current directory happens to be?

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