LD_ *vars

[Raman]

Hi,

I want to modify and recompile an application already installed on my
FreeBSD 4.10 machine and then when I'm done with it go back to the way
it was with that application before I modified and recompiled it.

I heard I should use bash and edit the LD_* vars.  I was not able to
find anything about them on www.freebsd.org.  I wanted to know how
LD_PRELOAD and LD_LIBRARY_PATH worked.

Thank you for your help and time.

- Raman