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Why People Use Unix ?
Now How to Decide Which Version of Unix To go for. ?
Unix Remote Machines
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Why People Use Unix ?
Most of the older applications are using various Unix Versions . Large Databases normally have UNIX as operating system because UNIX is stable and Secure. The number of Virus for Unix are too less as compared to Windows. You can have safe , fast browsing experience, There are no problems of Popup blocker etc , The programs are stable and they donot crash . According to Sophos a leading anti virus writer states that the top 10 anti virus program have been written for windowsWhen any new feature or facilites are required windows require rebooting While Unix donot .So this helps in a database which runs in a 24 * 12 Hour scenario. When you handle large databases you need to know what is impacting the peformance of the Computer . Unix has got lot of inbuilt tools and commands to handle that.
You can write programs which can do a lot of task . It is a inbuilt facility in Unix. You can use it to say take automatic backups, automatic tuning ,etc Any required tasks can be programmed using shell scripting. Writing any sort of program Extracting ,Transforming the data which is in one format to some other format You can use sed to search for characters in different files and replace the characters on variety of situation.
Crontab
Using Cron tab you can schedule the timing of running any proccess or programs Below is an example of crontab command being used
cron is a unix, solaris utility that allows tasks to be automatically run in the background at regular intervals by the cron daemon. These tasks are often termed as cron jobs in unix , solaris. Crontab (CRON TABle) is a file which contains the schedule of cron entries to be run and at specified times.
Crontab syntax :-
A crontab file has five fields for specifying day , date and time followed by the command to be run at that interval.
* * * * * command to be executed |
Multi Tasking
Now How to Decide Which Version of Unix To go for. ?
Different Flavours of Unix.
Linux growth has been increasing since it is a Open source software .It currently runs on all Hardware . Hp , Sun Solaris , IBM.
Currently Hp Unix , Sun Solars and Ibms are the top vendors of Unix.
- Normally Hp ,Sun,Linux .AIX UNIX from IBM are used by companies having large database.They always come out with hardware And new version of Unix which has improvement in performance Their marketing point is the hardware which they sell. Hp has got features for Running SUN os in Hp Machine since they got customers shifting from SUN os to Hp.
Features and Facilites
Reliablity Commecial version of Unix has already supported large databases
Performance and System Tools#
Number of system tools for Commercial Unix are more And advaned.
They show the system status easily.
There are specialised package managers in commercial unix..
Linux donot still support hot swapping of components
Support
Responsiblity For Commercial version of Unix lies with The company so they tend to provide better support.
Unix Remote Machines
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