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How to set ip address to a computer in Qt (Solved)

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  • p3c0P Offline
    p3c0P Offline
    p3c0
    Moderators
    wrote on last edited by
    #22

    It does work for me from the App and Outside
    @
    args<<"-c"<<
    "sudo -S ifconfig eth0 192.168.100.21</home/ubuntu/passwd.txt";
    @

    There should be a space before and after < in above command.

    157

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    0
    • p3c0P Offline
      p3c0P Offline
      p3c0
      Moderators
      wrote on last edited by
      #23

      It does work for me from the App and Outside
      @
      args<<"-c"<<
      "sudo -S ifconfig eth0 192.168.100.21</home/ubuntu/passwd.txt";
      @

      There should be a space before and after < in above command.

      157

      1 Reply Last reply
      0
      • H Offline
        H Offline
        houmingc
        wrote on last edited by
        #24

        under /opt
        cat >password.txt 'Key in my password'
        cat password 'Check my password'

        its work, thanks alot :>>

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        • H Offline
          H Offline
          houmingc
          wrote on last edited by
          #25

          under /opt
          cat >password.txt 'Key in my password'
          cat password 'Check my password'

          its work, thanks alot :>>

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          0
          • p3c0P Offline
            p3c0P Offline
            p3c0
            Moderators
            wrote on last edited by
            #26

            Well then get the errors using readyReadStandardError() signal if any.

            157

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            • p3c0P Offline
              p3c0P Offline
              p3c0
              Moderators
              wrote on last edited by
              #27

              Well then get the errors using readyReadStandardError() signal if any.

              157

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              • H Offline
                H Offline
                houmingc
                wrote on last edited by
                #28

                what does "-c" in front of "sudo -s" meant or used for??

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                0
                • H Offline
                  H Offline
                  houmingc
                  wrote on last edited by
                  #29

                  what does "-c" in front of "sudo -s" meant or used for??

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                  • p3c0P Offline
                    p3c0P Offline
                    p3c0
                    Moderators
                    wrote on last edited by
                    #30

                    It is for sh so that it reads commands from argument strings. Check "this":http://manpages.ubuntu.com/manpages/utopic/en/man1/sh.1posix.html man page for more details. I hope your system has sh command.

                    157

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                    • p3c0P Offline
                      p3c0P Offline
                      p3c0
                      Moderators
                      wrote on last edited by
                      #31

                      It is for sh so that it reads commands from argument strings. Check "this":http://manpages.ubuntu.com/manpages/utopic/en/man1/sh.1posix.html man page for more details. I hope your system has sh command.

                      157

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                      • H Offline
                        H Offline
                        houmingc
                        wrote on last edited by houmingc
                        #32

                        QProcess Class is used to start external programs and to communicate with them.
                        create a new QProcess and input args to /bin/sh.
                        Below code has been tested working.
                        Thanks to p3c0, if not, answer below will not be available :

                        QProcess *myProcess = new QProcess;
                        QStringList args;
                        args<"-c"<<"sudo -S ifconfig eth0 192.168.100.1 < /var/passwd.txt");
                        myProcess->start("/bin/sh",args);
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