01-12-2006
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
All,
I want to run a non-root script as the root user with non-root environment variables with crontab. The non-root user would have environment variables for database access such as Oracle or Sybase. The root user does not have the Oracle or Sybase enviroment variables. I thought you could do... (2 Replies)
Discussion started by: bubba112557
2 Replies
2. UNIX for Dummies Questions & Answers
Hi folks,
I'm trying to install a program, and I want to place some of the executables into /usr/bin so that they can be executed from any folder on the computer. I've been giveng the root password, but told never to log in directly as root. Instead, I can wait for a password prompt. However, I... (2 Replies)
Discussion started by: lunchtime
2 Replies
3. AIX
Hi, yesterday, I changed root's shell in /etc/passwd, cause a mistake then I can not log in root account (can't find correct shell). I attempted to log in single-mode, however, it prompted for single-mode's password then I type root's password but still can not log in.
I'm using AIX 5L version 5.2... (2 Replies)
Discussion started by: neikel
2 Replies
4. UNIX for Dummies Questions & Answers
hi
i am new to unix and i have abig task. i have to \run particular commands having root privileges from a non root user. i know sudo is one of the way but i need sum other approach kindly help
Thanks (5 Replies)
Discussion started by: suryashikha
5 Replies
5. Solaris
Hi All
Hope it's okay to post on this sub-forum, couldn't find a better place
I've got a 480R running solaris 8 with veritas volume manager managing all filesystems, including an encapsulated root disk (I believe the root disk is encapsulated as one of the root mirror disks has an entry under... (1 Reply)
Discussion started by: sunnyd76
1 Replies
6. Solaris
Hi All
After downloading ZFS documentation from oracle site, I am able to successfully migrate UFS root FS without zones to ZFS root FS. But in case of UFS root file system with zones , I am successfully able to migrate global zone to zfs root file system but zone are still in UFS root file... (2 Replies)
Discussion started by: sb200
2 Replies
7. SuSE
I access over 100 SUSE SLES servers as root from my admin server, via ssh sessions using ssh keys, so I don't have to enter a password. My SUSE Admin server is setup in the following manner:
1) Remote root access is turned off in the sshd_config file.
2) I am the only user of this admin... (6 Replies)
Discussion started by: dvbell
6 Replies
8. Shell Programming and Scripting
I need to list users in /etc/passwd with root's GID or UID or /root as home directory
If we have these entries in /etc/passwd
root:x:0:0:root:/root:/bin/bash
rootgooduser1:x:100:100::/home/gooduser1:/bin/bash
baduser1:x:0:300::/home/baduser1:/bin/bash... (6 Replies)
Discussion started by: anil510
6 Replies
9. UNIX for Dummies Questions & Answers
I had a question in my test which asked where suppose user B has a program with 's' bit set. Can user A run this program and gain root privileges in any way?
I suppose not as the suid program run with privileges of owner and this program will run with B's privileges and not root. (1 Reply)
Discussion started by: syncmaster
1 Replies
10. UNIX for Beginners Questions & Answers
i do not have root on a solairs 10 server , however i do have the root role, i was wondering if I can change the root password as a a role with the passwd command? I have not tried yet.
and do i have to use the # chgkey -p afterwards?
i need to patch is why i am asking.
thanks (1 Reply)
Discussion started by: goya
1 Replies
LEARN ABOUT DEBIAN
mpil_trace_off
MPIL_Trace_off(3) LAM/MPI MPIL_Trace_off(3)
NAME
MPIL_Trace_off - LAM/MPI-specific function to disable run-time tracing
SYNOPSIS
#include <mpi.h>
int MPIL_Trace_off(void)
NOTES
These functions give the application the flexibility to generate traces only during certain interesting phases of the application's execu-
tion. This technique can considerably reduce the size of the trace files and burden of displaying them.
Both functions are collective over the MPI_COMM_WORLD communicator. In typical usage, the -toff option of mpirun (1) would be used to
enable tracing, but start with the runtime switch in the off position. At the beginning of an interesting phase of program execution,
MPIL_Trace_on would be called. MPIL_Trace_off would be called after the interesting phase. Tracing can be turned on and off many times.
Each period of tracing eventually forms a trace segment in the trace file extracted by lamtrace (1). If the on/off functions are never
used and tracing is enabled with the -ton option of mpirun (1), a single trace segment is produced.
The on/off functions have no effect if tracing is not enabled by mpirun (1) with either the -ton or -toff switches. Thus, an application
can be littered with these functions but run without trace collection and very little additional overhead due to the no-operation function
calls.
This is a LAM/MPI-specific function and is intended mainly for debugging. If this function is used, it should be used in conjunction with
the LAM_MPI C preprocessor macro
#if LAM_MPI
MPIL_Trace_off();
#endif
LIMITATIONS
After the volume of generated traces exceeds a preset limit, the oldest traces are discarded in favour of new traces. Avoiding discarded
traces is further incentive to use MPIL_Trace_on and MPIL_Trace_off .
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
If an error occurs in an MPI function, the current MPI error handler is called to handle it. By default, this error handler aborts the MPI
job. The error handler may be changed with MPI_Errhandler_set ; the predefined error handler MPI_ERRORS_RETURN may be used to cause error
values to be returned (in C and Fortran; this error handler is less useful in with the C++ MPI bindings. The predefined error handler
MPI::ERRORS_THROW_EXCEPTIONS should be used in C++ if the error value needs to be recovered). Note that MPI does not guarantee that an MPI
program can continue past an error.
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. The C++ bindings for MPI do not return error values; instead, error values are communicated by throwing exceptions of
type MPI::Exception (but not by default). Exceptions are only thrown if the error value is not MPI::SUCCESS .
Note that if the MPI::ERRORS_RETURN handler is set in C++, while MPI functions will return upon an error, there will be no way to recover
what the actual error value was.
MPI_SUCCESS
- No error; MPI routine completed successfully.
MPI_ERR_OTHER
- Other error; use MPI_Error_string to get more information about this error code.
SEE ALSO
MPI_Trace_on, mpirun
LOCATION
mpil_trace.c
LAM
/MPI 7.1.4 6/24/2006 MPIL_Trace_off(3)