Type of UNIX applications Post: 303004888

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Special Forums UNIX and Linux Applications Type of UNIX applications Post 303004888 by jim mcnamara on Tuesday 10th of October 2017 11:11:51 AM

10-10-2017

Registered User

It doesn't quite work that way. Most applications that run on UNIX have a linux version. Simply put: no linux migration path == lost software business. Except in the case of legacy stuff written back in the 1980's.

Linux is a derivative of UNIX, like earlier flavors of UNIX were derivatives System V UNIX that became AIX, Solaris, and so on. The difference here is that there are POSIX standards nowadays which means, in practical terms, that porting your homegrown code to Linux is usually feasible. Often pretty close to painless.

There are some products that are OS specific. You would get a lot better answers if you told us what applications you have running now and what you want to do. A list like you asked for will get you nowhere.

Example: oracle works well on UNIXes and Linux. In fact, Oracle appliances like EXADATA machines run Linux - for other UNIX types.

Specifics are needed here.

jim mcnamara

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LEARN ABOUT X11R4

getuid32

GETUID(2)						     Linux Programmer's Manual							 GETUID(2)

NAME

       getuid, geteuid - get user identity

SYNOPSIS

       #include <unistd.h>
       #include <sys/types.h>

       uid_t getuid(void);
       uid_t geteuid(void);

DESCRIPTION

       getuid() returns the real user ID of the calling process.

       geteuid() returns the effective user ID of the calling process.

ERRORS

       These functions are always successful.

CONFORMING TO

       POSIX.1-2001, POSIX.1-2008, 4.3BSD.

NOTES

   History
       In UNIX V6 the getuid() call returned (euid << 8) + uid.  UNIX V7 introduced separate calls getuid() and geteuid().

       The  original  Linux  getuid()  and  geteuid()  system  calls supported only 16-bit user IDs.  Subsequently, Linux 2.4 added getuid32() and
       geteuid32(), supporting 32-bit IDs.  The glibc getuid() and geteuid() wrapper functions transparently deal with the variations across  ker-
       nel versions.

SEE ALSO

       getresuid(2), setreuid(2), setuid(2), credentials(7)

COLOPHON

       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2017-09-15								 GETUID(2)

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