en vs et vs ent

Posted on February 9, 2015 by UNIX Admin

most of us has  confused between the network devices en, et & ent, you can read the following to put a limit for this confusion 🙂 :

ent:
The notation ent is used to specify the hardware adapter. It has nothing to do with the TCP/IP address.

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OLTP vs OLAP

Posted on September 24, 2014 by UNIX Admin

We can divide IT systems into transactional (OLTP) and analytical (OLAP). In general we can assume that OLTP systems provide source data to data warehouses, whereas OLAP systems help to analyze it.

olap vs oltp

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OLAP

Posted on September 24, 2014 by UNIX Admin

OLAP (online analytical processing): is computer processing that enables a user to easily and selectively extract and view data from different points of view.

For example, a user can request that data be analyzed to display a spreadsheet showing all of a company’s beach ball products sold in Florida in the month of July, compare revenue figures with those for the same products in September, and then see a comparison of other product sales in Florida in the same time period.

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oltp

Posted on September 24, 2014 by UNIX Admin

OLTP ( Online transaction processing) : is a class of information systems that facilitate and manage transaction-oriented applications, typically for data entry and retrieval transaction processing.

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LVM

Posted on September 20, 2014 by UNIX Admin

LVM :- Logical Volume Manager and it’s a disk Management for Linux/UNIX Systems.

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CDR

Posted on September 20, 2014 by UNIX Admin

-The CDR (Call Details Record and also knows as Call Data Record) is a data record produced by a telephone exchange or other telecommunications equipment that contains attributes that are specific to a single instance of a phone call or other communication transaction that was handled by that facility or device. It is the automated equivalent of the paper toll tickets that were written and timed by operators for long-distance calls in a manual telephone exchange.

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How To Check Linux Hardware Info

Posted on July 5, 2014 by UNIX Admin 
lscpu

Reports info about the cpu and processing units.

lshw

Reports detailed/brief info about multiple hardware units like cpu, memory, disk, network adapters etc.

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how to Compare between 2 files

Posted on March 3, 2014 by UNIX Admin

how to comapre between 2 files to list the differences between them ???

there is a greate 2 commands which you can use them.

first command is

diff  FILE1  FILE2

and this command just display the difference between the 2 files.

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How to sync users and password between hosts on hacmp

Posted on February 23, 2014 by UNIX Admin

AIX has a wonderful method to synchronize the users and their passwords or any files you need to sync them between HACMP Nodes.

there is a command call “rdist”, this command used to transfer files between hosts and make them synced.

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uncompress files using jar command

Posted on February 23, 2014 by UNIX Admin

you can uncompressed zipping files using java, specially “jar” command:

 

to do that , try the following :

 

/usr/java6/bin/jar -xvf /tmp/test.zip
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