UNIX Commands - Similarities & Differences Post: 303044551

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Solaris Unix vs HP Unix, Could someone point out the major differences.

Solaris Unix vs HP Unix, Could someone point out the major differences. I have been performing Support to Solaris Unix for about 6 years, now I am interviewing for a HP Unix position. Could someone point out the major differences? Should it be an easy transition? Thanks

2. UNIX for Dummies Questions & Answers

Problem running plsql & unix commands in 1 script

Hi, I need help again. When I run this shell script, it only runs the unld_date.sql piece and exits. How can I structure this to run all the way to the end? When I don't have the unld_date.sql piece in here, everything runs fine from the date compare piece all the way to the end. Thanks in...

3. UNIX for Dummies Questions & Answers

Socket Handling Differences Between Linux & Unix?

Sorry if this is a stupid question! I have been developing a Java application that I am deploying on both Unix and Linux servers, which uses lots of socket handling. When the server side connection is dropped by the server un-gracefully I have been seeing close_waits and null connections. ...

4. UNIX for Dummies Questions & Answers

Differences between different versions of Unix

I sent a private message to one of the administrators/moderators, but I thought I'd ask here publicly after some thought. I'm getting into Unix on my Mac (BSD). I was just wondering what the differences are between versions of Unix -- I want to learn more about it, but would it be better to...

5. Shell Programming and Scripting

Need help... Differences in Communication commands

What is the difference between the following commands. Please with example? rsh ssh scp rcp rlogin ftp telnet Cheers..

6. Shell Programming and Scripting

Differences in printed commands after execution with same code

I have a korn shell script that executes a function which is stored in a common library. In the function there is obviously some code. Here is the line of code in the function in question: temp=`echo $status_cnt|tr -d ` When the shell script executes with set -x, I'm seeing that on most...

7. UNIX for Dummies Questions & Answers

Red Hat 7.3 and UNIX similarities and differences::

I recently started an introductory course in UNIX / Linux Red Hat 7.3. The textbook came with the Red Hat 7.3 OS included but no UNIX. Are the commands and syntax so closely related that if I learn one I automatically know how to use the other. What are the similarities and differences. When...

8. Shell Programming and Scripting

Renaming files & folder according to the similarities in filenames

hello does someone want to help me for this one ? i want to rename files & a folder according to the similarities in filenames for example : the file with the good name cglogo tougl1953 dgmel bogd 01 -- ttgductoog ggdt� gollogtd.ext1the others files needed to be renamed cglogo...

9. UNIX for Dummies Questions & Answers

UNIX vs windows, differences

Hello! Please, I am sorry, I am the absolute beginner, If I have unix as os instead of lets say windows, then can I go to INTERNET and how? Are there some other BIG differences? Many thanks!!!

LEARN ABOUT LINUX

setegid

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

NAME

       seteuid, setegid - set effective user or group ID

SYNOPSIS

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

       int seteuid(uid_t euid);
       int setegid(gid_t egid);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       seteuid(), setegid():
	   _BSD_SOURCE || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600

DESCRIPTION

       seteuid()  sets	the  effective user ID of the calling process.	Unprivileged user processes may only set the effective user ID to the real
       user ID, the effective user ID or the saved set-user-ID.

       Precisely the same holds for setegid() with "group" instead of "user".

RETURN VALUE

       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

ERRORS

       EPERM  The calling process is not privileged (Linux: does not have the CAP_SETUID capability in the case of seteuid(),  or  the	CAP_SETGID
	      capability  in  the case of setegid()) and euid (respectively, egid) is not the real user (group) ID, the effective user (group) ID,
	      or the saved set-user-ID (saved set-group-ID).

CONFORMING TO

       4.3BSD, POSIX.1-2001.

NOTES

       Setting the effective user (group) ID to the saved set-user-ID (saved set-group-ID) is possible since Linux 1.1.37 (1.1.38).  On  an  arbi-
       trary system one should check _POSIX_SAVED_IDS.

       Under libc4, libc5 and glibc 2.0 seteuid(euid) is equivalent to setreuid(-1, euid) and hence may change the saved set-user-ID.  Under glibc
       2.1 and later it is equivalent to setresuid(-1, euid, -1) and hence does not change the saved set-user-ID.  Similar remarks hold for  sete-
       gid().

       According  to POSIX.1, seteuid() (setegid()) need not permit euid (egid) to be the same value as the current effective user (group) ID, and
       some implementations do not permit this.

SEE ALSO

       geteuid(2), setresuid(2), setreuid(2), setuid(2), capabilities(7), credentials(7)

COLOPHON

       This page is part of release 3.27 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								    2009-10-17								SETEUID(2)