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Full Discussion: how passwd cmd is working
Operating Systems Linux Red Hat how passwd cmd is working Post 302436361 by guruprasadpr on Sunday 11th of July 2010 07:56:56 AM
Old 07-11-2010
Hi

Check this to understand how the passwd command works and what exactly SUID is?

btw, this being a linux forum: the shell script in the above link is an example to understand, SUID is blocked in RHEL on scripts, its only on executables.

Guru.
 

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VMWARE-USER-SUID-WRAPPER(8)					   Open VM Tools				       VMWARE-USER-SUID-WRAPPER(8)

NAME
vmware-user-suid-wrapper - wrapper programm for vmware-user(1) SYNOPSIS
vmware-user-suid-wrapper DESCRIPTION
Operations on the vmblock(9) filesystem are considered privileged, and as such may only be issued on a file descriptor acquired by root. This is accomplished by vmware-user-suid-wrapper, a small setuid wrapper whose only purpose is to acquire a filesystem file descriptor, drop superuser privileges, and then execute vmware-user(1). In particular, prepare the system for vmware-user means that it unmounts the vmblock file system, unloads the vmblock module, then reloads the module, mounts the file system, and opens a file descriptor that vmware- user can use to add and remove blocks. OPTIONS
vmware-user-suid-wrapper has no options. SEE ALSO
vmware-checkvm(1) vmware-hgfsclient(1) vmware-toolbox(1) vmware-toolbox-cmd(1) vmware-user(1) vmware-xferlogs(1) libguestlib(3) libvmtools(3) vmware-guestd(8) vmware-hgfsmounter(8) vmblock(9) vmci(9) vmhgfs(9) vmmemctl(9) vmsock(9) vmsync(9) vmxnet(9) vmxnet3(9) HOMEPAGE
More information about vmware-user-suid-wrapper and the Open VM Tools can be found at <http://open-vm-tools.sourceforge.net/>. AUTHOR
Open VM Tools were written by VMware, Inc. <http://www.vmware.com/>. This manual page was put together from homepage materials by Daniel Baumann <daniel.baumann@progress-technologies.net>, for the Debian project (but may be used by others). 2010.03.20-243334 2010-04-08 VMWARE-USER-SUID-WRAPPER(8)
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