Having an odd problem.

Tried to install Tripwire from tripwire.org and followed the steps. It asked for a "site passphrase" which I have no idea what it is, I attempted to type my own (assuming it was asking for me to create a passphrase), told me incorrrect.

I tried to uninstall, reinstall and during (steps here inuxsecurity.com/content/view/117563/49)
did rpm -ivh tripwire-2.3-47.i386.rpm in root and told me 'package already installed' even though I removed everything that showed as 'tripwire' completely and ran updatedb.

Can someone please explain this?

For Nessus, I ran lynx -source http ://install.nessus.org | sh (self installer) and followed the steps, got this:

sh: ./configure: /bin/sh: bad interpreter: Permission denied
**** An error occured :/
Press any key to quit

I sent a request through their mailing list and Paul responded with "Probably because /bin/sh is a symbolic link to /bin/bash. Try piping to bash instead of sh. "

I honestly have no idea what he means by this.

Please help! Thank you

1) running updatedb doesn't change the database of installed packages. After removing an rpm, run 'rpm --rebuilddb' to rebuild the rpm database of installed packages.
2) 'lynx -source http ://install.nessus.org | bash' instead of 'lynx -source http ://install.nessus.org | sh'. The | symbol is the pipe symbol. When used between two commands, the first command is executed, and the output is sent (piped) through the second command.