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Madeswaran N
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Shellshock bug – vulnerability on Bash shell: How to fix ?
Shellshock bug – vulnerability on Bash shell: How to fix ? On September 24, 2014, a GNU Bash vulnerability, referred to as Shellshock or the "Bash Bug", was disclosed. In short, the vulnerability allows remote attackers to execute arbitrary code given certa...

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Install Redhat Linux 5/6 on iSCSI SAN Boot : How to ??
Software iSCSI: For a software initiator to implement a SAN boot device, you can have the root device on an iSCSI LUN, and you can use any of the following options to load the kernel:  1.A host’s locally attached disk (for storing kernel and initrd images) ...

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Linux Interview Questions - PORT Related: PART 7
PORT Related interview questions in Linux: 1. What is a port? A port is piece of software which is used as docking point in your machine, where remote application can communicate. This is analogy to the physical ports for entering in to a country from diffe...

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File Encryption using GPG in Linux: How to ??
File Encryption using GPG in Linux: GPG is an encryption and signing tool for Linux/UNIX like operating system. With GPG you can encrypt and decrypt files with a password. Basically gpg uses a pair of keys, public key and private key. Data encrypted with on...

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Redhat Cluster - Interview Questions and Answers: Part 1
1. What is CMAN Basically, cluster manager is a component of the cluster project that handles communications between nodes in the cluster. CMAN is Cluster Manager. It manages cluster quorum and cluster membership. CMAN runs on each node of a cluster 2. What...

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How to increase semaphore value in linux?
What is semaphore ? Semaphore can be described as counters used to control access to shared resources by multiple processes, They are most often used as a locking mechanism to prevent processes from accessing a particular resource while another process is p...

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How to get UUID value and disk device attributes in Linux ?
How to view UUID values and print block device attributes in linux? Option 1 : Using blkid command Option 2 : Using dumbe2fs command Option 3: using  # ls -l /dev/disk/by-uuid To view UUID values and block device attributes: [root@serverA ~]# blkid /dev/cci...

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UMASK in Linux: How to set permission with UMASK ?
UMASK  :  Permission Set When New File / Folder Created UMASK known as
User Mask or it is also called User File creation MASK. This is a kind of base
permission or default permission given when new file or folder is created in
Linux box. Most of the distrib...

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