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Top Forums Shell Programming and Scripting For loop and running 2 commands at once? Post 302398708 by Stephan on Thursday 25th of February 2010 10:42:56 AM
Old 02-25-2010
For loop and running 2 commands at once?

HI.

I am trying to run 2 commands, using the "for x in a b c d" loop but i am having a hard time coding it...

Here is what i have so far:

Code:
for SERVER in SERVERA SERVERB SERVERC SERVERD SERVERE 
do

###############################################################################
# Launching the first backup...
###############################################################################

        echo ${LOGIN} "GENERATE BACKUPSET ${SERVER}

###############################################################################
# Launching the second backup
###############################################################################

        echo ${LOGIN} "GENERATE BACKUPSET ${SERVER}

###############################################################################
# Waiting for the first pair to complete...
###############################################################################

  while (( $( ${LOGIN} q proc | grep "GENERATE BACKUPSET" | wc -l) != 0 ))
  do
     echo ".\c"
     sleep 60
  done
done


What i am trying to do, is get the loop to run the GENERATE BACKUPSET SERVERA and SERVERB at the same time. Then wait using the while loop at the bottom. Once those 2 are completed (while loop would exit) it should keep going to GENERATE BACKUPSET SERVERC and SERVERD and so on...I've inserted "echo" in the front for debug purposes...

What i am getting though, is a GENERATE BACKUPSET SERVERA twice instead...

I tried to issue a "continue" but that did not work either...

Ideas?

Thanks!

Last edited by Scott; 02-25-2010 at 12:13 PM.. Reason: Please use code tags
 

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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 5.11 3 Aug 1994 echo(1B)
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