The lack of an 'add' option has always bugged me too.
You can specify more than one group with -G, i.e. -G group1,group2,group3 but you'll have to extract group information somehow to get their previous groups.
Closest I've gotten to that is
which feels like a horrible hack for something one feels ought to be built into something else..
Last edited by Corona688; 11-02-2006 at 11:03 AM..
Hi!!,
I am on HP UX -11. I have created a new group and want to assign some the users to this group without changing their existing group ( The new group is the secondary group for them)
Any ideas how to do it??
SAM doesnt seem to be working.. Any way of doing it from command line??
... (1 Reply)
Hi
How can I add a group1, group2 and group3 inside another global group called systemgroup?
I have differents users in group1,2,3n and I create a sysgroup, now I want to add theses groups into the global.. is it possible?
NOTE: Debian OS running.
thanks (1 Reply)
Hey,
Can someone pls give me an idea on how to write a shell script for the below requirement.
I am generating lot of .txt files in a unix directory through a etl tool, now I need to write a shell script which will move these files to another directory(\abc\xyz\source), but in the... (2 Replies)
Hi,
I have two little issues:
1) there is possible in sh to create a function who return a boolean value?
2)i have to verify if an user belongs to a group and i think it is needed to create a function which take two parameter and return a boolean value. in fact i have to parse /etc/group... (5 Replies)
Hi,
please let me know the commands to create new group/delete existing group in unix and assigning users to newly created group.
Thank you in advance. (2 Replies)
Hey folks,
When a user is added to a new group, the user has to be log out and log in again to make the new group effective. Is there any system command or technique to refresh user group ID update without re-login?
I am not talking about to use "login" or "su -l" commands which can only make... (2 Replies)
I believe there are two methods of adding a user to a group. using usermod and gpasswd. but most of the time we tent to use user mod. does there any difference between these two methods ....
gpasswd -a geek admins
usermod -a -G admins geek
both code add user geek to a group admin (1 Reply)
Hi Guys,
I want a script where in I need to send an email to individual users about their groups.
OS:unix redhat
Shell :Bash.
The mail should be like,"Hi &username , you are in part of &group1,&group2 .."
I need to mail to their personal email id mostly @outlook. Not to their UNIX.... (1 Reply)
Discussion started by: vijay2107
1 Replies
LEARN ABOUT DEBIAN
mpi_group_difference
MPI_Group_difference(3) MPI MPI_Group_difference(3)NAME
MPI_Group_difference - Makes a group from the difference of two groups
SYNOPSIS
int MPI_Group_difference(MPI_Group group1, MPI_Group group2, MPI_Group *newgroup)
INPUT PARAMETERS
group1 - first group (handle)
group2 - second group (handle)
OUTPUT PARAMETER
newgroup
- difference group (handle)
NOTES
The generated group containc the members of group1 that are not in group2 .
THREAD AND INTERRUPT SAFETY
This routine is thread-safe. This means that this routine may be safely used by multiple threads without the need for any user-provided
thread locks. However, the routine is not interrupt safe. Typically, this is due to the use of memory allocation routines such as malloc
or other non-MPICH runtime routines that are themselves not interrupt-safe.
NOTES FOR FORTRAN
All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have an additional argument ierr at the end of the argument list. ierr
is an integer and has the same meaning as the return value of the routine in C. In Fortran, MPI routines are subroutines, and are invoked
with the call statement.
All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.
ERRORS
All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value; C routines as the value of the function and Fortran routines in
the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI
job. The error handler may be changed with MPI_Comm_set_errhandler (for communicators), MPI_File_set_errhandler (for files), and
MPI_Win_set_errhandler (for RMA windows). The MPI-1 routine MPI_Errhandler_set may be used but its use is deprecated. The predefined
error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can
continue past an error; however, MPI implementations will attempt to continue whenever possible.
MPI_SUCCESS
- No error; MPI routine completed successfully.
MPI_ERR_GROUP
- Null or invalid group passed to function.
MPI_ERR_INTERN
- This error is returned when some part of the MPICH implementation is unable to acquire memory.
SEE ALSO
MPI_Group_free
LOCATION
group_difference.c
11/6/2010 MPI_Group_difference(3)