Here's one script, I found it somewhere in the net, long time ago...
It gengerates HTML report for most of the important system files. See the usage at the start of the script. It works for RHEL, FC*; you need to be root to execute this, also, you may add any system env as per your wishes.
Code :
#!/bin/bash
# Description: Linux System Information Report in HTML format
# Usage: script-name > /var/www/html/report.html
cat << HEAD
<HTML>
<HEAD><TITLE>System Report</TITLE></HEAD>
<BODY bgcolor="#c0c0c0" text="#000000">
<HR size=5>
<P>
<H1>System Report for "
HEAD
echo `hostname`
cat << BODY1
"</H1>
<P>
<HR size=5>
<P>
BODY1
cat << HOSTNAME
<H3>OS System Configuration:</H3>
<B>hostname: </B>
HOSTNAME
/bin/hostname
cat << RELEASE
<P>
<B>OS Release: </B>
RELEASE
/bin/cat /etc/*-release
cat << HOSTID
<P>
<B>hostid: </B>
HOSTID
/usr/bin/hostid
cat << UNAMEO
<P>
<B>Kernel OS: </B>
UNAMEO
uname --operating-system
cat << UNAMER
<P>
<B>Kernel release: </B>
UNAMER
uname --kernel-release
cat << UNAMEV
<P>
<B>Kernel version: </B>
UNAMEV
uname --kernel-version
cat << UNAMEK
<P>
<B>Harware Platform: </B>
UNAMEK
uname --hardware-platform
cat << UNAMEPM
<P>
<B>Processor Architecture: </B>
UNAMEPM
uname --processor
cat << CHKCONFIG
<P>
<B>System services: (chkconfig)</B>
<DL><DD>
<SMALL>
<PRE>
CHKCONFIG
/sbin/chkconfig --list|grep on
cat << CHKCONFIGEND
</PRE>
</SMALL>
</DL>
<P>
CHKCONFIGEND
cat << CRONTAB
<P>
<B>File: <TT>/etc/crontab</TT></B>
<DL><DD>
<SMALL>
<PRE>
CRONTAB
cat /etc/crontab
cat << CRONTABEND
</PRE>
</SMALL>
</DL>
<P>
CRONTABEND
echo "<P><HR><P>"
echo "<H3>Network Configuration:</H3>"
cat << HOSTS
<P>
<B>File: <TT>/etc/hosts</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
HOSTS
cat /etc/hosts
cat << HOSTSEND
</PRE>
</SMALL>
</DL>
<P>
HOSTSEND
cat << SWITCH
<B>File: <TT>/etc/nsswitch.conf</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
SWITCH
cat /etc/nsswitch.conf
cat << SWITCHEND
</PRE>
</SMALL>
</DL>
<P>
SWITCHEND
cat << RESOLV
<B>File: <TT>/etc/resolv.conf</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
RESOLV
cat /etc/resolv.conf
cat << RESOLVEND
</PRE>
</SMALL>
</DL>
<P>
RESOLVEND
cat << IFCONFIG
<B>ifconfig: </B>
<DL><DD>
<SMALL>
<PRE>
IFCONFIG
/sbin/ifconfig
cat << IFCONFIGEND
</PRE>
</SMALL>
</DL>
<P>
IFCONFIGEND
cat << ROUTE
<B>/sbin/route: </B>
<DL><DD>
<SMALL>
<PRE>
ROUTE
/sbin/route
cat << ROUTEEND
</PRE>
</SMALL>
</DL>
<P>
ROUTEEND
if [[ -r /etc/sysconfig/network ]];
then
cat << IFCFGN
<B>Network Configuration File: <TT>/etc/sysconfig/network</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
IFCFGN
cat /etc/sysconfig/network
cat << IFCFGENDN
</PRE>
</SMALL>
</DL>
<P>
IFCFGENDN
fi
cat << IFCFG
<B>Files <TT>/etc/sysconfig/network-scripts/ifcfg-eth*</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
IFCFG
cat /etc/sysconfig/network-scripts/ifcfg-eth*
cat << IFCFGEND
</PRE>
</SMALL>
</DL>
<P>
IFCFGEND
echo "<P><HR><P>"
if [[ -r /etc/mail/local-host-names || -r /etc/sendmail.cw || -r /etc/aliases || -r /etc/mail/virtusertable ]];
then
echo "<H3>Mail Server Configuration:</H3>"
if [[ -r /etc/mail/local-host-names ]];
then
# Redhat 7.1 - Fedora Core X
cat << SENMAILCFGN2
<B>Mail Hosts File: <TT>/etc/mail/local-host-names</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
SENMAILCFGN2
cat /etc/mail/local-host-names
cat << SENMAILCFGN2
</PRE>
</SMALL>
</DL>
<P>
SENMAILCFGN2
elif [[ -r /etc/sendmail.cw ]];
then
# Redhat 6.x
cat << SENMAILCFGN
<B>Mail Hosts File: <TT>/etc/sendmail.cw</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
SENMAILCFGN
cat /etc/sendmail.cw
cat << SENMAILCFGN
</PRE>
</SMALL>
</DL>
<P>
SENMAILCFGN
fi
if [[ -r /etc/mail/virtusertable ]];
then
cat << SENMAILCFGV
<B>Sendmail Virtual Table File: <TT>/etc/mail/virtusertable</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
SENMAILCFGV
cat /etc/mail/virtusertable
cat << SENMAILCFGV
</PRE>
</SMALL>
</DL>
<P>
SENMAILCFGV
fi
if [[ -r /etc/aliases ]];
then
cat << SENMAILCFGN
<B>eMail Aliases File: <TT>/etc/aliases</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
SENMAILCFGN
cat /etc/aliases
cat << SENMAILCFGN
</PRE>
</SMALL>
</DL>
<P>
SENMAILCFGN
fi
fi
echo "<P><HR><P>"
cat << DF
<H3>Storage:</H3>
<B>df -k: </B>
<DL><DD>
<SMALL>
<PRE>
DF
df -k
cat << DFEND
</PRE>
</SMALL>
</DL>
<P>
DFEND
cat << FDISK
<B>Disk Partitions: <TT>/sbin/fdisk -l</TT>:</B>
<DL><DD>
<SMALL>
<PRE>
FDISK
/sbin/fdisk -l
cat << FDISKEND
</PRE>
</SMALL>
</DL>
<P>
FDISKEND
cat << FSTAB
<B>File: <TT>/etc/fstab</TT>: </B>
<DL><DD>
<SMALL>
<PRE>
FSTAB
cat /etc/fstab
cat << FSTABEND
</PRE>
</SMALL>
</DL>
FSTABEND
echo "<P><HR><P>"
cat << HARDWARE
<H3>Hardware Configuration:</H3>
<B>CPU info: </B>
<DL><DD>
<SMALL>
<PRE>
HARDWARE
cat /proc/cpuinfo
cat << SWAP
</PRE>
</SMALL>
</DL>
<P>
<B>Total Swap Memory: </B>
<DL><DD>
SWAP
grep SwapTotal: /proc/meminfo
cat << MEM
</DL>
<P>
<B>System Memory: </B>
<DL><DD>
MEM
grep MemTotal /proc/meminfo
cat << MEMEND
</DL>
<P>
MEMEND
cat << PCI
<B>/sbin/lspci: </B>
<DL><DD>
<SMALL>
<PRE>
PCI
/sbin/lspci
cat << PCIEND
</PRE>
</SMALL>
</DL>
<P>
PCIEND
cat << HWCONF
<B>Devices:</B>
<DL><DD>
<B>File: <TT>/etc/sysconfig/hwconf</TT></B>
<SMALL>
<PRE>
HWCONF
cat /etc/sysconfig/hwconf
cat << HWCONFEND
</PRE>
</SMALL>
</DL>
<P>
HWCONFEND
cat << BODYEND
<P>
<HR>
<P>
</BODY>
</HTML>
BODYEND