Solved

unix process

Posted on 2002-04-03
6
444 Views
Last Modified: 2013-12-06
All I/O in a Unix system is stream-oriented rather than record oriented as it is in most other Systems. what is the advantages and disadvantages of this approach?
0
Comment
Question by:spdevassy
6 Comments
 
LVL 51

Expert Comment

by:ahoffmann
ID: 6917482
imagine your record size is 2MB, and you send one single byte
0
 
LVL 3

Expert Comment

by:elfie
ID: 6921588
you don't have to define the record structure in advance.
you have 'free formatted' data in the files. Your application determine the file layout and not the OS. Although not directly related maximum files most not be known in advance (as on some record oriented systems).
0
 

Expert Comment

by:akhilesh_chadha
ID: 7068356
programs in unix system  have no knowlege of intrenal format in which kernel stores the data .treating file as stream of bytes,program may iterpret stream of bytes as they want for example the text formatting program "troff" expects to find a new line charater at end of each line while system accounting software  expets to find fixed lenth record  .both programs use same sysytem  services to acess the data in the file as a byte stream and iternally ,they parse the stream into suitable format,
 
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Expert Comment

by:kslzzg
ID: 7102569
I believe stream I/O in OS is a lower level processing which make use of its features of block I/O or raw I/O to maximise the throughput and at the same time maintain the flexibility and scalability.  While Applications such as Oracle do recognise its data in terms of records to maintain data integrity and ease of operation, it still needs lower-level OS I/O to support this application-level operation through system call.
0
 
LVL 20

Expert Comment

by:tfewster
ID: 7621399
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
- PAQ & remove points

Please leave any comments here before 13/1/2003

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

tfewster (I don't work here, I'm just an Expert :-)
0
 

Accepted Solution

by:
SpideyMod earned 0 total points
ID: 7805284
per recommendation

SpideyMod
Community Support Moderator @Experts Exchange
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

My previous tech tip, Installing the Solaris OS From the Flash Archive On a Tape (http://www.experts-exchange.com/articles/OS/Unix/Solaris/Installing-the-Solaris-OS-From-the-Flash-Archive-on-a-Tape.html), discussed installing the Solaris Operating S…
Using libpcap/Jpcap to capture and send packets on Solaris version (10/11) Library used: 1.      Libpcap (http://www.tcpdump.org) Version 1.2 2.      Jpcap(http://netresearch.ics.uci.edu/kfujii/Jpcap/doc/index.html) Version 0.6 Prerequisite: 1.      GCC …
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
In a previous video, we went over how to export a DynamoDB table into Amazon S3.  In this video, we show how to load the export from S3 into a DynamoDB table.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now