Originally Posted by birds
wat is the software to be installed in rhel4 in order to execute c/c++,lex and yacc programs??
Please spell your words out, and clarify your question. Not exactly sure what you mean.
If you've GOT a compiled program, you just run it, usually with "program name", or "./program name". If you need to COMPILE one, you'll need the GCC compiler installed, and whatever development libraries your program needs.
Since you don't say anything about what version/distro of Linux you're using, can't really give you specifics about what to install, or how to install it.