December 26, 2009

Linux modules and libraries

Linux General,

Dynamically linked libraries are linked and loaded at run time, either by “ld.so” or “ld-linux.so”, depending on how it was compiled: in a.out or ELF format. Every program whenever they need a library, look through a known list of places to find the needed library. One place they look is “/etc/ld.so.cache”, which contains an ordered…

Read more
December 26, 2009

RPM – RedHat Package Manager

Linux General,

What does a RPM Package contain? RPMs (*.rpm) typically include 1) the compiled programs and/or libraries needed for the package, 2) documentation 3) install, verify, and uninstall scripts 4) cryptographic signatures for each file in the package. This makes it easy to verify the integrity of the package. 5) It also includes a list of…

Read more
September 16, 2009

Linux Security Tools

Linux General,

In this page i will try to provide some of the must have tools for linux OS. Some of these tools can also be used for FreeBsd: ROOT KIT HUNTERS: Installation how to *  CHKROOTKIT * RKHUNTER * ROOTCHECK @RootCheck: You can download the rootcheck latest version from the following URL: http://www.ossec.net/rootcheck/files/ Installation how to:…

Read more
September 16, 2009

Exim Command line arguments

Linux General,

Exim Command line arguments The command options are described in alphabetical order below. — This is a pseudo-option whose only purpose is to terminate the options and therefore to cause subsequent command line items to be treated as arguments rather than options, even if they begin with hyphens. -B This is a Sendmail option for…

Read more