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Sourcing a script using QProcess

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  • S Offline
    S Offline
    SGaist
    Lifetime Qt Champion
    wrote on 14 Jan 2016, 12:33 last edited by
    #6

    Try with p.start("bash", QStringList() << "-c" << "\"\"source /path/to/test.sh\"\"");

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    M 2 Replies Last reply 14 Jan 2016, 13:21
    0
    • S SGaist
      14 Jan 2016, 12:33

      Try with p.start("bash", QStringList() << "-c" << "\"\"source /path/to/test.sh\"\"");

      M Offline
      M Offline
      Mark81
      wrote on 14 Jan 2016, 13:21 last edited by
      #7

      @mrjj
      In this way the process (bash, or /bin/sh in my case) starts but it immediately ends with exit value 2 without executing the script.
      QProcess returns no error.

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      • S SGaist
        14 Jan 2016, 12:33

        Try with p.start("bash", QStringList() << "-c" << "\"\"source /path/to/test.sh\"\"");

        M Offline
        M Offline
        Mark81
        wrote on 14 Jan 2016, 13:27 last edited by
        #8

        @SGaist
        The process runs and the exit code is 0, but the script is not executed. By the way if I try to execute the following on prompt:

        /bin/sh -c ""source /path/to/test.sh""
        

        it does "nothing" (I mean no errors nor echo output).

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        • S Offline
          S Offline
          SGaist
          Lifetime Qt Champion
          wrote on 14 Jan 2016, 13:43 last edited by
          #9

          How are you checking that it does nothing with QProcess ?

          In the console version you have too much quotes it should only be bash -c "source /path/to/test.sh"

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          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

          M 1 Reply Last reply 14 Jan 2016, 14:29
          0
          • S SGaist
            14 Jan 2016, 13:43

            How are you checking that it does nothing with QProcess ?

            In the console version you have too much quotes it should only be bash -c "source /path/to/test.sh"

            M Offline
            M Offline
            Mark81
            wrote on 14 Jan 2016, 14:29 last edited by
            #10

            @SGaist

            How are you checking that it does nothing with QProcess ?
            

            The env vars are not exported and there is no echo.

            In the console version you have too much quotes it should only be bash -c "source /path/to/test.sh"
            

            Yes, in this way the echo is shown but the vars are not exported. It's the same as run the script directly without sourcing it. But it's beyond my knowledge to understand why.

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            • M Offline
              M Offline
              mrjj
              Lifetime Qt Champion
              wrote on 14 Jan 2016, 14:35 last edited by
              #11

              Can I ask silly question?
              If you run bash first, wont the export be in that instance of bash?
              source test.sh;echo $MYVAR
              does as expected
              but not with bash first.

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              • S Offline
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                SGaist
                Lifetime Qt Champion
                wrote on 14 Jan 2016, 21:54 last edited by
                #12

                On OS X putting the echo call inside the "command string" worked.

                I'm reading stdout using readAllStandardOutput

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                M 1 Reply Last reply 15 Jan 2016, 07:50
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                • S SGaist
                  14 Jan 2016, 21:54

                  On OS X putting the echo call inside the "command string" worked.

                  I'm reading stdout using readAllStandardOutput

                  M Offline
                  M Offline
                  Mark81
                  wrote on 15 Jan 2016, 07:50 last edited by
                  #13

                  @SGaist
                  Ok, I will try using readAllStandardOutput() too. But also the env vars are correctly exported?

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                  • J Offline
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                    jsulm
                    Lifetime Qt Champion
                    wrote on 15 Jan 2016, 07:55 last edited by
                    #14

                    You can set the environment using

                    QProcess::setProcessEnvironment(const QProcessEnvironment & environment)
                    

                    You can get the environment of your current process via

                    QProcessEnvironment::systemEnvironment()
                    

                    https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • S Offline
                      S Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on 15 Jan 2016, 22:39 last edited by
                      #15

                      @Mark81 Yes both the Hello World and content of the variable were shown. Again it's on OS X with a recent version of bash.

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                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                      15 Jan 2016, 22:39

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