03-19-2020
9 More Discussions You Might Find Interesting
1. Solaris
We have bunch of Sun Sparc workstations(solaris 7 & 8) connecting to a linux file server with NFS exports. Recently we upgraded our file server from fedora core1 to redhat enterprise linux 4. And since then we are experiencing a nightmare of file/dir missing. It happens randomly, couple of times... (1 Reply)
Discussion started by: motor98
1 Replies
2. Filesystems, Disks and Memory
We have a Slackware 9.1 box that our ASP controls. We use it to see the logging of our Weblogic-clusters.
All the logging is auto-mounted in /rmt which is fine, as long as you know the names of the mountpoints. When you don't access the mountpoints for a certain period of time, the mountpoint... (0 Replies)
Discussion started by: indo1144
0 Replies
3. Shell Programming and Scripting
Hi all... I-m quite a new user of UNIX and i was trying to write a simple program and my problem is the following:how can i make a typed letter disappear (as we see in the MORE command, when we type <space>, b, q etc...) i know that for typing some text that has to be read it's used the structure:... (0 Replies)
Discussion started by: Cellofan
0 Replies
4. Ubuntu
My PC (Esprimo, 3 yeas old) has one hard drive having 2 partitions C: (80 GB NTFS, XP) and D: (120 GB NTFS, empty) and and a 200 MB area that yet is not-partitioned.
I would like to try Ubuntu and to install Ubuntu on the not-partitioned area . The idea is to have the possibility to run... (7 Replies)
Discussion started by: C.Weidemann
7 Replies
5. UNIX and Linux Applications
I have set a mysql file to excute everyday morning to generate a html file displayng 2 tables from the database. Sometime they cannot be shown, and it shows the tables are not existed. I have not drop any table, and those 2 tables are not used by any other excution. Anybody know what is happening?... (0 Replies)
Discussion started by: c203040
0 Replies
6. Linux
Hi all,
I'm kind of new to programming in Linux & c/c++. I'm currently writing a FileManager using Ubuntu Linux(10.10) for Learning Purposes. I've got started on this project by creating a loopback device to be used as my virtual hard disk. After creating the loop back hard disk and mounting it... (23 Replies)
Discussion started by: shen747
23 Replies
7. Linux
Dear all, I lost my CentOS 6.4, Systems default bar/panel where we navigate our system for the Applications, Places & System, Is there anyone who can help me please??? (1 Reply)
Discussion started by: saqlain.bashir
1 Replies
8. Red Hat
Hello,
1 ) Fdisk -l # Displays all the disk with partition table information
My Query )
A ) How can i make one disk ex: /dev/sdd not visible in fdisk -l output ?
B) From where fdisk -l collect and display the information ? (8 Replies)
Discussion started by: saurabh84g
8 Replies
9. Shell Programming and Scripting
#!/bin/sh
PATH_1=$PATH
echo "PATH_1 is " $PATH_1
function user_func (){
whoami
export PATH=$PATH_1:/usr/local/bin
echo "PATH is" $PATH
exit
}
export -f user_func
su -m hadoop -c 'user_func'
from out put, PATH is not set with PATH_1 append ( it's not another user to run the... (5 Replies)
Discussion started by: yanglei_fage
5 Replies
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)