Variable increment (of some sort) Post: 302646097

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Top Forums Shell Programming and Scripting Variable increment (of some sort) Post 302646097 by Corona688 on Thursday 24th of May 2012 01:30:53 PM

05-24-2012

Registered User

Code:

for VAR in `print $SERVERLIST`

useless use of backticks. for VAR in $SERVERLIST will do.

But you don't need to run print and cut in backticks 10 times to process one line of text either. It is extremely slow to run awk/cut/sed 10 times to process 10 single bits of text -- that's like making 10 phone calls to say 10 words. I'd just split in the shell itself:

Code:

OLDIFS="$IFS" # Save the default value of the special IFS variable for later.  It controls splitting.

SERVERLIST="1:Server_1a 1:Server_1b 2:Server_2a 2:Server_2b 3:Server_3a 3:Server_3b 4:Server_4a 4:Server_4b"

IFS=": " # Split on space, or :
        set -- $SERVERLIST # $1=1, $2=Server_1a, $3=1, $4=Server_1b, etc.
IFS="$OLDIFS" # Set splitting back to normal

VAR=""

while [ "$#" -gt 0 ] # Loop until $1, $2, ... are empty.  We remove two arguments per loop.
do
        # Append new result to VAR.  If VAR was "1" before, it'll be "1 2", etc.
        VAR="$VAR $(cmd $1 ".././ServerBounce.ksh $2")"
        shift ; shift # Get rid of $1, $2, and shift down so the list starts at $1 again.
done

# $1 will be the result from the first process, $2 is the result from the second, etc.
set -- $VAR
echo "$# results in list"
echo "First is $1"
echo "Second is $2"
...

Last edited by Corona688; 05-24-2012 at 02:37 PM..

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LEARN ABOUT DEBIAN

addbddvar

ADDBDDVAR(3)							   BDD FUNCTIONS						      ADDBDDVAR(3)

NAME

       addbddvar - adds a new variable in the bdd system.

ORIGIN

       This  software  belongs	to  the  ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in
       Paris, France.

       Web : http://asim.lip6.fr/recherche/alliance/
       E-mail : alliance-users@asim.lip6.fr

SYNOPSYS

       #include "bdd101.h"
       bddnode *addbddvar( BddSystem, Variable )
	 bddsystem *BddSystem;
	 bddvar     Variable;

PARAMETERS

       BddSystem	   The bdd system.

       Variable 	   The variable number.

DESCRIPTION

       addbddvar creates a new variable, with the number Variable, in the bdd system BddSystem.  If a null pointer is given, the default bdd  sys-
       tem is used.

RETURN VALUE

       addbddvar returns a pointer to the bdd node of the new variable.

ERRORS

       "no more variables, error !"
	      There is no variable number left.
       "variable xxx out of range, error !"
	      The Variable parameter must be less or equal to the BddSystem->NUMBER_VAR field.

EXAMPLE

       #include "bdd101.h"
	  bddsystem  *BddSystem;
	  bddnode    *BddNode;
	  BddSystem  = createbddsystem( 100, 1000, 100, 50000 );
	  BddNode = addbddvar( (bddsystem *)0, 0 );
	  destroybddsystem( (bddsystem *)0 );

SEE ALSO

       bdd(1)

BUG REPORT

       This tool is under development at the ASIM department of the LIP6 laboratory.
       We need your feedback to improve documentation and tools.

ASIM
/LIP6							  October 1, 1997						      ADDBDDVAR(3)