Mac OS X periodically runs background tasks that, in part, remove system files that are no longer needed. These tasks run at certain times if the computer is not in sleep mode. The tasks purge older information from log files or delete certain temporary items. Learn how the tasks automatically run after the computer wakes in Mac OS X v10.6 and later, and how you can manually force the tasks to run in Mac OS X v10.5 or earlier.
Hi am new to unix ,
when the background task is running how to put entry in the table and also if there is any issue how to stop the running task.
can anyone help me... (1 Reply)
Hi,
I have a requirement where I want to submit appx 100 jobs based on the files received. Assume today I received source file for 50 jobs, then I have submit a common script at 50 times.
This common script will take appx 1-2 mins to finish. I can' complete my parent script untill all the... (1 Reply)
I am trying to use a loop to start tasks 0-3, running 0,1,2 in the background with &.
FOLDSET=( 0 1 2 3 )
for FOLDSET in ${FOLDSET}
do
if ; then
BACKGRD="&"
else
BACKGRD=""
fi
# start task $FOLDSET
task1 -nogui -ni -p $PROJ \
epochs=$EPOS ... (3 Replies)
1. Write a shell program which renames the current directory with the given file extension to another extension. The playoffs are given on the command line.
Example usage:
$ Rename txt doc
will be renamed:
aaa.txt in aaa.doc
Juhutxt in Juhudoc
...
* To solve, you can also help with... (5 Replies)
I've been given more responsibility at work and was basically told to take junior system admin responsibilities over our aix box. The catch is, I need to learn on my own. I know basics, but what are some task that I could perform on a daily basis for starters? We have a support group, but not so... (2 Replies)
Hi guys! I have a dummy question for u :p
I cant find a solution for these tascks...tried everything (i know :cool: ).
1 Issue the following command sleep 1000
Note that sleep 1000 waits 1000 seconds!!! You cannot do anything now!!!
2 Open another terminal window and enter the tty... (1 Reply)
TASKS(3PVM) PVM Version 3.4 TASKS(3PVM)NAME
pvm_tasks - Returns information about the tasks running on the virtual machine.
SYNOPSIS
C int info = pvm_tasks( int where, int *ntask, struct pvmtaskinfo **taskp )
struct pvmtaskinfo {
int ti_tid;
int ti_ptid;
int ti_host;
int ti_flag;
char *ti_a_out;
} taskp;
Fortran call pvmftasks( where, ntask, tid, ptid, dtid, flag, aout, info )
PARAMETERS
where Integer specifying what tasks to return information about. The options are:
0 for all the tasks on the virtual machine
pvmd tid for all tasks on a given host
tid for a specific task
ntask Integer returning the number of tasks being reported on.
taskp Returns pointer to an array of structures which contain information about each task including its task ID, parent tid, pvmd task
ID, status flag, and the name of this task's executable file. The status flag values are: waiting for a message, waiting for the
pvmd, and running.
tid Integer returning task ID of one task
ptid Integer returning parent task ID
dtid Integer returning pvmd task ID of host task is on.
flag Integer returning status of task
aout Character string returning the name of spawned task. Manually started tasks return blank.
info Integer status code returned by the routine. Values less than zero indicate an error.
DESCRIPTION
The routine pvm_tasks returns information about tasks presently running on the virtual machine. The information returned is the same as
that available from the console command ps. The C function returns information about the entire virtual machine in one call. The Fortran
function returns information about one task per call and cycles through all the tasks. Thus, if where = 0, and pvmftasks is called ntask
times, all tasks will be represented.
Note that in Fortran the reported value of ntask and the set of tasks do not change until the function resets at the end of a complete
cycle. The user can reset pvmftasks() at any time by calling it with ntask = -1.
If pvm_tasks is successful, info will be 0. If some error occurs then info will be < 0.
EXAMPLES
C:
struct pvmtaskinfo *taskp;
int i, ntask;
info = pvm_tasks( 0, &ntask, &taskp );
for (i = 0; i < ntask; i++)
printf("t%x
", taskp[i].ti_tid);
Fortran:
Do i=1, NTASK
CALL PVMFTASKS( DTID, NTASK, TID(i), PTID(i), DTID(i),
& FLAG(i), AOUT(i), INFO )
EndDo
ERRORS
The following error condition can be returned by pvm_tasks
PvmBadParam
invalid value for where argument.
PvmSysErr
pvmd not responding.
PvmNoHost
specified host not in virtual machine.
SEE ALSO pvm_config(3PVM), pvm_tidtohost(3PVM)
31 August, 1994 TASKS(3PVM)
