linux: ubuntu instruction update
#!/bin/bash
-sudo apt-get install gcc g++ make wget
+sudo apt-get install gcc g++ make wget ruby ruby-dev
sudo apt-get install build-essential
sudo apt-get install \
"^libxcb.*" libx11-dev libx11-xcb-dev libxcursor-dev libxrender-dev libxrandr-dev \
@@ -15,5 +15,4 @@ sudo apt-get install qtdeclarative5-dev qtmultimedia5-dev libqt5multimediawidget
libqt5multimedia5-plugins libqt5multimedia5 qtwebengine5-dev libx11-xcb-dev \
libglu1-mesa-dev libxrender-dev libfontconfig1-dev
-# Add "export QTDIR=/usr/lib/x86_64-linux-gnu/qt5/" to ~/.profile and reboot the system
-# grep -qxF 'export QTDIR=/usr/lib/x86_64-linux-gnu/qt5' ~/.profile || echo 'export QTDIR=/usr/lib/x86_64-linux-gnu/qt5' >> ~/.profile
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+grep -qxF 'export QTDIR=/usr/lib/x86_64-linux-gnu/qt5' ~/.bashrc || echo 'export QTDIR=/usr/lib/x86_64-linux-gnu/qt5' >> ~/.bashrc
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