I am new to this platform.I have to do a project on "CONTENT CENTER MANAGEMENT" ie ("customer care management system").I got the steps to build this project on "SLACKWARE" as "SCRATCH INSTALLATION".But i have to develop the project on "CENTOS 5.5".can any body help me what is the difference between "CENTOS" and "SLACKWARE" ie (its "ARCHITECTURE" and "FUNCTIONALITIES" and "COMMANDS").And anybody help me how to build the project on centos

It's been a long time since I used CentOS but the basic command set for both is the same. Linux is Linux. Where distributions differ is usually in how they set their runtime configuration under /etc and what window managers/desktop environments and programs they include by default.

It's been a long time since I messed with CentOS, but the Slackbook gives you a good introduction to Slackware's organization and structure.

http://www.slackbook.org/

I run Slackware stable and -current at home, and I run a CentOS VM at work. Both distros provide excellent documentation. They are both worthy of your consideration. Both Slackware and CentOS are sturdy and stable. It would take more than one post to describe the differences/similarities between the two distros. You will need to try them out and experiment. This is what FOSS is all about. Suffice it to say that I am heavily biased towards Slackware. If I had to choose between the two distros then Slackware wins.

Greetingz!

Primary 'differences' between Slackware & CentOS;

CentOS
History Main Website DistroWatch Page
RPM-based
100% RHEL-compatible (as long as no 3rd-party RPM repositories are used).
Revolves around RHEL update releases.
Most applications are the more-stable older releases.
Patches do not do major point-release upgrades of packages, rather they include backported fixes to bugs and security issues.
Many "Red Hat"-isms.

Slackware
History Main Website DistroWatch Page
Longest-running actively-maintained Linux Distribution.
tar+gzip "packages".
Follows a "Keep it Simple, Stupid" principle.
Does not revolve around GUI interfaces.
Little "customization" done to the Linux distribution. Most packages are 'stock'.
No "Red Hat"-isms (things specific to Red Hat distributions).

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Great Reply. I am replying over 6 months but the same principles continue I assume. Both distros are great. I will keep them both but I am leaning towards Slackware. I like both for different reasons.