Questasim 10.7c can be downloaded from the official website. The installation process is straightforward, and the software is available for Windows, Linux, and macOS.
For official documentation on command-line arguments like -c (command line) or -i (interactive), you can refer to the Siemens EDA (formerly Mentor Graphics) support portal . questasim 10.7c download
Then reboot or run source ~/.bashrc