Overview
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File System Saint, or just "Saint", is designed to be a fast, flexible
and easy to use Host-based Intrusion Detection System. The code is free
for use and modification - see the license for details.

Saint records file attributes such as ownership, permissions and size as
well as a SHA checksum then monitors them for change. This provides reporting
to a level and time-increment of your choice for just a few files, or your
entire system.  


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Required modules (Use: "perl -MCPAN -e shell" to install)
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Digest::SHA
Digest::MD5
Getopt::Std
File::Find


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Usage
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Usage: saint [options]

Options
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 -c <config file> Config: Specify a config file. Defaults to saint.conf
 -d <database>  Database: Specify a database file. Defaults to <hostname>.db
 -h                 Help: Show usage information.
 -i           Initialize: Generate a new database.
 -l <logfile>    Logfile: Set logfile. Default is saint.log.
 -L                Links: Include checks on symbolic links. (skipped by default) -q                Quiet: Suppress all output except for changes and errors.
 -s                 Scan: Use the DB as a reference and check all known files.
 -S            Deep Scan: Use a new scan as a ref thus accounting for new files. -v              Verbose: Print detailed information to terminal.
 -Y                 Yack: Print extensive information to the log.

Use of Initialize or one of the Scan modes is required.

Create/Re-initialize the database:

saint -i

Standard system check:

saint -s

Suppress log output:

saint -l /dev/null [other options]

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Notes
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* There is no "Update" option. This is because at the present time it is
  faster to just re-create the database than to compare and update. In the
  future there will be better support for updates.

* It is recommended that you set owner and group permissions as follows:
  saint      - root/other 0500 (-r-x------)
  saint.conf - root/other 0400 (-rw-------)
  directory  - root/other 0700 (drwx------)