Exim Utilities ..

EXIM UTILITIES

Introduction

Exim is the default mail transport agent installed on some Linux systems; it runs on many versions of Unix and is suitable for any TCP/IP network with any combination of hosts and end-user mail software. It is open source, scalable, rich in features, andbest of all-easy to configure.

Exim utilities

  • exiwhat : List what Exim processes are doing.

The exiwhat script sends the signal to all Exim processes it can find, having first emptied the file. It then waits for one second to allow the Exim processes to react before displaying the results. In order to run exiwhat successfully you have to have sufficient privilege to send the signal to the Exim processes, so it is normally run as root.

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Perl Modules ..

PERL MODULES

What is Perl?

Perl is a high-level programming language with an eclectic heritage written by Larry Wall and a cast of thousands. It derives from the ubiquitous C programming language and to a lesser extent from sed, awk, the Unix shell, and at least a dozen other tools and languages. Perls process, file, and text manipulation facilities make it particularly well-suited for tasks involving quick prototyping, system utilities, software tools, system management tasks, database access, graphical programming, networking, and world wide web programming. These strengths make it especially popular with system administrators and CGI script authors, but mathematicians, geneticists, journalists, and even managers also use Perl.

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PHP DSO ..

PHP DSO

DSO – Dynamically Shared Objects

Apache with PHP can be installed in two different ways.

  • Statically embed the PHP binary into the Apache binary. This is probably the fastest and best way to run PHP
  • Install Apache and PHP is by using Apaches DSO module

Why DSO?

Apache supports adding modules on instead of embedding them in the httpd binary. This works well when you dont want to re-compile Apache each time a module is updated, or if you want to add on numerous modules for development purposes

System Administrators Dream: Allows developers to upgrade PHP without having to recompile Apache

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