04-25-2017
I always use VI when working on a unix or linux system doing either sys admin tasks, or software development tasks.
This is especially important since most all tasks above are done remotely. However, even on my local MacOS system, I still tend to use VI more often than not, on those types of tasks.
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LEARN ABOUT DEBIAN
pvm_catchout
CATCHOUT(3PVM) PVM Version 3.4 CATCHOUT(3PVM)
NAME
pvm_catchout - Catch output from child tasks.
SYNOPSIS
C #include <stdio.h>
int info = pvm_catchout( FILE *ff )
Fortran call pvmfcatchout( onoff, info )
PARAMETERS
ff File descriptor on which to write collected output.
onoff Integer parameter. Turns output collection on or off.
info Integer status code returned by the routine. Values less than zero indicate an error.
DESCRIPTION
The routine pvm_catchout causes the calling task (the parent) to catch output from any tasks spawned after the call to pvm_catchout. Char-
acters printed on stdout or stderr in children tasks are collected by the pvmds and sent in control messages to the parent task, which tags
each line and appends it to the specified file. Output from grandchildren (spawned by children) tasks is also collected, provided the
children don't reset their PvmOutputTid.
If option PvmShowTids (see pvm_setopt) is true (nonzero), output is printed as shown below, tagged with the task id where the output origi-
nated:
[txxxxx] BEGIN
[txxxxx] (text from child task)
[txxxxx] END
The output from each task includes one BEGIN line and one END line, with whatever the task prints in between. If PvmShowTids is false, raw
output is printed with no additional information.
In C, the output file descriptor may be specified. Giving a null pointer turns output collection off for any subsequently spawned child
tasks. (Any existing output collection will still proceed at the child tasks, until they exit or change theirPvmOutputTid or related set-
tings - see man page for pvm_setopt().) In Fortran, output collection can only be turned on or off (again only for subsequently spawned
child tasks), and is always logged to the stdout of the parent task.
If pvm_exit is called while output collection is in effect, it will block in order to print all the output, until all tasks sending the
given task output have exited. To avoid this, output collection can be turned off by calling pvm_catchout(0) before calling pvm_exit.
pvm_catchout() always returns 0.
EXAMPLES
C:
#include <stdio.h>
pvm_catchout(stdout);
Fortran:
CALL PVMFCATCHOUT( 1, INFO )
SEE ALSO
pvm_exit(3PVM), pvm_setopt(3PVM), pvm_spawn(3PVM)
13 July, 1994 CATCHOUT(3PVM)