linux创建快捷方式
ln -s /usr/pycharm-2020.3.3/bin/pycharm.sh /usr/bin/pycharm1
ln -s /usr/local/Polyspace/R2020a/bin/matlab /usr/bin/matlab
ln -s /usr/pycharm-2020.3.3/bin/pycharm.sh /usr/bin/pycharm1
ln -s /usr/local/Polyspace/R2020a/bin/matlab /usr/bin/matlab