求助Ubuntu下安装synopsys怎么会出现redhat啊？

苍天有井自来空

dv&
[1] 6389
root@ubuntu:~# grep: /etc/redhat-release: No such file or directory
Unable to obtain feature 'Design-Vision ' because:
Error: Can't communicate with the license server. (SEC-12)
Please contact  at root@(none), who is
your local Synopsys license administrator for Synopsys site 000.
Unable to obtain feature 'Design-Analyzer ' because:
Error: Can't communicate with the license server. (SEC-12)
Please contact  at root@(none), who is
your local Synopsys license administrator for Synopsys site 000.
Fatal: At least one of the following must be enabled : Design-Vision, Design-Analyzer. (DCSH-10)


有点郁闷了  按照步骤一点一点来的，提示我找不到/etc/redhat-release