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Thread: System Calls

  1. #1
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    System Calls

    I am working with UNIX operating system. What are systems calls in UNIX means.Are they sepearte set of commands in UNIX.


  2. #2
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    Sep 2006
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    477

    Re: System Calls

    As far as my understandiing goes, these are functions that can be used to control the behaviour of UNIX. These functions can be called from a C/C++ programs.

    I am not too well versed with the concept. The following links might be helpful.

    The unix library: Unix system calls
    C, UNIX and Standard Libraries

    Hope that helped.
    Cheers,
    Kalayama

    [COLOR="Blue"][SIZE="2"]"If you are not living on the edge of your life, you are wasting space"[/SIZE][/COLOR]

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  3. #3
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    Dec 2006
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    204

    Re: System Calls

    System calls are functions in kernel. it requests the OS to do some thing for user program.
    The commands we give in shell invokes a system call to kernel to perform the operation.


  4. #4
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    Sep 2006
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    477

    Re: System Calls

    This is another good link for this topic. It correlates C,Unix and Unix System Calls.
    Programming in C

    Last edited by kalayama; 12-26-2006 at 07:48 AM.
    [COLOR="Blue"][SIZE="2"]"If you are not living on the edge of your life, you are wasting space"[/SIZE][/COLOR]

    Someone says "Impossible is nothing". The man next him says "Let me see you licking your elbow tip!"

  5. #5
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    Jul 2006
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    Re: System Calls

    Friends after studying this topic even I want to learn a lot on system calls.Can someone out here suggest a good book to learn about system calls covering C and UNIX operating system.


  6. #6
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    Sep 2006
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    477

    Re: System Calls

    I don't know of a hard covered book. buit the link pasted above in my previous post is about the best you can get! That link covers some awesome topics and explains them beautifully.

    Cheers!
    Kalayama

    [COLOR="Blue"][SIZE="2"]"If you are not living on the edge of your life, you are wasting space"[/SIZE][/COLOR]

    Someone says "Impossible is nothing". The man next him says "Let me see you licking your elbow tip!"

  7. #7
    Junior Member
    Join Date
    Jan 2007
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    9

    Re: System Calls

    You could checkout this site. linux.about.com thats a good one.
    http://linux.about.com/library/cmd/blcmdl2_syscalls.htm
    Cheers,
    -Chandan.


  8. #8
    Contributing Member
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    Apr 2007
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    41

    Re: System Calls

    I thnk Unix Internals by VAHALIA is very good book, explaining the internals of UNIX covering signals, Process , file systems, SIGNALs...


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