How to launch Modelsim Intel FPGA in Linux

Dear,

I installed ModelSim-Intel® FPGAs starter edition.

But can not launch it? Below is the error ?

root@lixiaof-mobl:~/intelFPGA/20.1/modelsim_ase/linuxaloem# ll vsim
-rwxr-x--- 1 root root 7111460 Feb 29 2020 vsim*
root@lixiaof-mobl:~/intelFPGA/20.1/modelsim_ase/linuxaloem# ./vsim
-bash: ./vsim: No such file or directory
root@lixiaof-mobl:~/intelFPGA/20.1/modelsim_ase/linuxaloem# vsim
-bash: /root/intelFPGA/20.1/modelsim_ae/linux/vsim: No such file or directory
root@lixiaof-mobl:~/intelFPGA/20.1/modelsim_ase/linuxaloem# pwd
/root/intelFPGA/20.1/modelsim_ase/linuxaloem

Thanks a lot

Bob