11-21-2006
Problem with storage of PID's to variables
I have the following problem to be solved:
I read a .csv file (tempfile), fetch the values into variables F1 to F5.
Variables F1, F2, F3 are parameters used for running a program (blablaprogram).
Variable F4 I want to use to store the PID-value in and variable F5 is used for storing the return value of the wait-process.
I want to distinquish the several parallel processes and monitor if they are finished. Problem is that I cannot store the PID into variables and read the content of the variable. At the line : echo "\n\t`date`:\t$F4 ........ , $F4 contains the variablename that has been read from the flatfile i.o. the PID.
Has anyone a suggestion?
The code (KSH) is shown underneath:
IFS=","
while read F1 F2 F3 F4 F5
do
blablaprogram $F1 $F2 > $LOGDIR/bes006_$F3.log 2>&1 &
set $F4=$!
echo "\n\t`date`:\t$F4 is Process ID for job waiting on $F1$F2"
wait $F4 # Wait until background process $F4 completes ...
set $F5=$?
echo "\n\tPID $F4: blabla Return Value for $F1$F2 concatination is: $F5"
case $F5 in
0) echo "\n\tConcatination on $F1$F2 COMPLETED Successfully"
;;
1) echo "\n\t!!! WARNING: Likely DATA ERROR ... !!!"
;;
2) echo "\n\t!!! FATAL ERROR ... !!!"
ERRORS=10; exit $ERRORS
;;
esac
echo "\n\t*********************************************************************"
done < $TEMPFILE
IFS=" "
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echo(1B) SunOS/BSD Compatibility Package Commands echo(1B)
NAME
echo - echo arguments to standard output
SYNOPSIS
/usr/ucb/echo [-n] [argument]
DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output.
echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi-
ronment variables.
For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows:
o echo your current-working-directory's full pathname
o pipe the output through tr to translate the path's embedded slash-characters into space-characters
o pipe that output through wc -w for a count of the names in your path.
example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w"
See tr(1) and wc(1) for their functionality.
The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if
the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape
characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's
echo() also understands a as the audible bell character; however, these commands do not have an -n option.
OPTIONS
-n Do not add the NEWLINE to the output.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5)
NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases.
SunOS 5.10 3 Aug 1994 echo(1B)