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Part one of a five part post series on setting up Linux and Unix servers securely.
Pinging And Checking Port Status With Perl CGI On Linux And Unix
Perl script to ping, check ports and create a CGI page report. This time written a bit more complicated than necessary to highlight some uses of Perl.
LVM Quick Command Reference For Linux And Unix
Quick reference guide for the most commonly used LVM commands.
Removing Logical Devices Using LVM On Linux And Unix
How to use the basic LVM commands to disable and remove your LVM logical devices.
Shell Scripting, Factorial Primes And Huge Number Computations On Linux And Unix
A look at prime, composite and relative prime number generation and machine/OS limitations common to deriving them.
Shell Script To Produce Prime Numbers On Linux And Unix
A bash script to find all prime numbers up to a user-specified ceiling.
Using NTSYSV To Manage Linux Services
How to use ntysyv, rather than chkconfig, to manage Linux services at specific run levels.
Using Chkconfig To Mange Linux Service Run Levels
How to use chkconfig to manage Linux services and work with the run levels you need them turned on and off for.
Monitoring and Display Commands For LVM On Linux And Unix
How to use the basic LVM commands to monitor and check on your LVM configuration.
How To Get Started With Logical Volume Management In Linux
A simple how to on getting started with LVM for Linux.
Finding The Number Of Open File Descriptors Per Process On Linux And Unix
How to make the distinction between open file descriptors and open files, and report on them, using the proc filesystem on Linux or Unix.
Distributing New SSH Keys Using Rsh On Linux And Unix
Quick and easy shell script to help setup openssl, openssh and zlib, while creating new ssh host keys, network-wide using rsh.
Using Perl To Handle Mass Mailing In Linux Or Unix
Simple Perl Script To Do Mass Emailing From Lists Running Any Mail Agent On Linux Or Unix.
Piped Variable Scoping In The Linux Or Unix Shell
Taking a look at variable scope, pipes and while-loops in various Linux and Unix shells.
Enumerating Files In The Linux or Unix Shell - More Improvements
Improvements, made by the Linux user community, to the shell one-liner designed to enumerate all files, and their types, within any Linux or Unix directory.
Shell Script To Monitor Disk Usage On Linux and Unix
Simple shell script to do disk monitoring across multiple OS's. Emphasis placed on simple design.
More Recognition For Readers' Suggested Improvements On Earlier Scripts
Updated version of the bash shell /dev/tcp and udp pseudo filesystem and its potential use.
More Fun With Security Through Obfuscation On Linux And Unix
More ways you can make your scripts more difficult to understand using Perl on Linux and Unix.
Perl Script To Help Solve the "M I U" puzzle on Linux or Unix
A Perl script for Linux or Unix to help solve the "M I U" formal systems puzzle of getting from MI to MU.
Looking At Formal Systems On Linux and Unix
Introduction to formal systems and an exercise to demonstrate.