Jeremy C. Reed wrote:
> Do all Linux systems include a "yacc" called yacc?
> 
> Do all Linux systems include a "lex" called "lex"?
> 
> Do all Linux systems come with "patch" by default?
> 
> Do all Linux systems come with GNU "make" by default?

All of these are not installed by default on Debian's base system.

> Do all Linux systems come with a GNU "awk" by default?

In Debian's base system, mawk is installed, because it's used by many 
scripts.

But all of these packages are installed by c-dev task.  This means that

# tasksel install c-dev

will install them all (along with many other things).  (Tasksel is in 
base system, because Debian's installer allows you to install tasks with 
it.)

Regards,
ogi