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Unix

Posted on 1998-12-27
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Last Modified: 2013-12-06
what is unix program

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Question by:bigfoot_jr
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by:elfie
ID: 2008525
Unix is kind of operating system.
each vendor has it's own flavor (hp --> HP-UX, Sun --> Solaris, on PC's --> Linux, and others)

So tt is NOT a program that can be started by a normal user like a spreadsheet.
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Expert Comment

by:arunm
ID: 2008526
A "unix program" can be any program that runs under unix operating system environment.
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cloud9999 earned 200 total points
ID: 2008527
a "eunuchs program" might involve the systematic elimination of one's testicles...
a "unix program" might involve the systematic elimination of one's sex life...

does this help?
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Expert Comment

by:rballen
ID: 2008528
I think of UNIX as more of platform, just like your PC and just like an IBM mainframe.  You can pratically have the same program run on all three platforms.  You might have to make minor changes, but if it is generic enough, it will be portbale to all platforms.  As I understand it, you have these platforms: workstations (PCs), midrange UNIX machines  (HP/DG/Sun/Solaris), and mainframes - old technology - IBMs. On the UNIX platform you can have all different types of programs - COBOL, C, etc. as well as interpretive command level languages like k-shell & c-shell & bourne-shell.  These languages are equal to the MS-DOS batch files on the PC.  They are nothing more than command-line commands bundled into a script file.  So I don't know if there is really is such a thing as a UNIX program ?
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Expert Comment

by:elfie
ID: 2008529
about the limitation of g between 0 and 255.

If you want to know how many times you can subtract 128, you can do a shift 7 bits to the right. So you end up with something like

i = ((long)g)>>7;  // 7 last bits equals 128
if (i>5)
  {
  i=5;
  g=255;
  }

PS: i didn't test the code, it just an idea.
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