like /usr/local
?
I tried file:///usr/local
but failed
[root@www2 robot]# cd file:///usr/local
-bash: cd: file:///usr/local: No such file or directory
If you have a requirement to be able to access generic URLs from your shell, try using curl as a replacement for your cat:
curl file:///path/to/file.txt
curl http://www.domain.com/file.txt
But as other posters have pointed out, the shell itself doesn't understand URLs.