我已经检查了所有系统要求和必备硬件，但还是不行。请大家帮帮我！
$ chmod +x BIOVIA_2020.DS2020Client.bin
$ ./BIOVIA_2020.DS2020Client.bin
Verifying archive integrity... 100% All good.
Uncompressing 'DS Client and extracting files, please wait ......' 100%
./install_DSClient.sh: 49: ./install_DSClient.sh: [[: not found
./install_DSClient.sh: 70: ./install_DSClient.sh: Syntax error: redirection unexpected