Originally Posted by lynne007
how do I tell if that version of linux supports regular expressions in the commands?
The name of the kernel suggests (to me) that you are either using Red Hat or Centos. Those certainly do support regular expressions. I have never heard of any distribution that does not support regular expressions. Perhaps you are confusing that term with something else.
We could provide better information if you described your problem in greater detail. What exactly are you trying to do? Here is an example of a good question:
I am trying to list all of the files that begin with the letter "i" in the directory /home/me/test.
I have used the following command in a terminal window (gnome-terminal) without success.
The result of issuing that command is the following:
ls: cannot access /home/me/test/i*: No such file or directory
markush makes a good point. The application, whether it is a video player or a shell in a terminal window, is really what does or does not support regular expressions.