Windows Admin switching to *nix Admin Post: 302499144

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The Lounge What is on Your Mind? Windows Admin switching to *nix Admin Post 302499144 by Corona688 on Wednesday 23rd of February 2011 10:23:44 AM

02-23-2011

Registered User

One way would be courses and certifications of course, though my experience with them has been poor... Lots of canned problems and canned answers, sometimes some really distro-specific things not applicable anywhere else, and not a lot of help teaching you how to troubleshoot. You will need to learn the basics to make much sense of it of course; file permissions, users, ownership and groups, disks and partitions are radically different from Windows' organization.

Install a variety of UNIX or Linux on a computer of your own -- doesn't have to be on your 'good' computer, in fact, probably better it isn't in case something goes seriously wrong. Most any "throwaway" PIII/PIV with 512M of RAM or better is great for a home server. Linux technically isn't UNIX by the way -- in the strictest sense that means an OS literally descended from one of the original UNIX varieties, but Linux was made from scratch and distanced from UNIX for copyright reasons. FreeBSD, NetBSD, or OpenSolaris are open varieties of UNIX. Don't install one of the toy Linux varieties(Ubuntu, Knoppix, Mandriva, anything really graphically-oriented) -- the GUI pretty much takes over those and you won't learn a lot. Try Gentoo, or Debian, or Fedoracore.

And once you have it, seriously use it. Make a home webserver/fileserver, get SSH going for remote access, see what problems you have to fight through to make things work.

Last edited by Corona688; 02-23-2011 at 11:34 AM..

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getuid

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, 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 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2010-11-22								 GETUID(2)