II- where do we get it ?

Fcheck comes as a compressed file (tar.gz or zip depending on architecture).
It doesn't need any compile since it's a script and it's really easy to get going with it
The web site is : Fcheck on web

III- Installation:

1-Step one :
Download the tar.gz file from the web site.

2-Untar the package:
[root@linux2 Simo]# gunzip FCheck_2.07.59.tar.gz
[root@linux2 Simo]# tar -xvf FCheck_2.07.59.tar
fcheck/
fcheck/license
fcheck/fcheck
fcheck/fcheck.cfg
fcheck/README
fcheck/install

3- Modify the FCheck executable to reflect appropriate paths selected for
your system. Find the "User modifiable variable definitions" section
(shown below) and modify it to reflect your site requirements as needed
by the following:

a) Ensure the variable ($config="/usr/local/etc/fcheck.cfg" or
$config="C:/FCheck/FCheck.cfg") depending on your platform is set
properly in the executable (FCheck) if you have renamed your
configuration file or install path to anything other than the
included default FCheck.cfg.

##########################################################################
# #
# User modifiable variable definitions: #
# #
##########################################################################
$config="/usr/local/etc/fcheck.conf";
# If you have a Win32 system, include the Drive letter like this example
#$config="C:/FCheck/FCheck.cfg"



b) Note: This can be over-ridden by passing the '-f' flag and the
complete path and name of an alternate configuration file.