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Full Discussion: obtain a new variable out of "for statment"
Top Forums Shell Programming and Scripting obtain a new variable out of "for statment" Post 302084165 by tmarikle on Wednesday 9th of August 2006 12:26:32 PM
Old 08-09-2006
Quote:
Originally Posted by aigles
Another way to do the work :
Code:
{
    unset A B C
    A=192.168.16.1
    B=192.168.32.1
    C=192.168.64.1

    for i in A=$A B=$B C=$C
    do
       echo $i | IFS="=..." read Var f1 f2 f3 f4
       if   [ $f3 -gt 16 -a  $f3 -lt 32 ] ; then
          eval $Var=192.168.202.1
       elif [ $f3 -gt 16 -a $f3 -lt 64 ]  ; then
          eval $Var=192.168.203.1
       fi
    done
    echo A=$A
    echo B=$B
    echo C=$C
}


Jean-Pierre.
Yep, that will run faster (4x on my system) for a single line, I wasn't sure what the OP's original goal was for including awk but the general flow of his post's code indicates single lines of input.

Why did you specify three periods in the IFS assignment? Only one is necessary.
 

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LEARN ABOUT CENTOS

aggregate-ios

AGGREGATE-IOS(1)					      General Commands Manual						  AGGREGATE-IOS(1)

NAME

       aggregate-ios - optimise a concatenated set of cisco/IOS prefix filters to help make them nice and short.

SYNOPSIS

       aggregate-ios <source_config >optimised_config

DESCRIPTION

       Takes  cisco IOS configuration on stdin, and optimises any prefix filters found using aggregate(1).  Optimised filters are produced on std-
       out.

OPTIONS

       None.

DIAGNOSTICS

       Any diagnostics produced by aggregate(1) are passed through on stderr.

EXAMPLES

       The following configuration fragment:

	 ip prefix-list AS65530 description Foo, Inc
	 ip prefix-list AS65530 permit 10.1.0.0/16
	 ip prefix-list AS65530 permit 10.2.0.0/16
	 ip prefix-list AS65530 permit 10.2.1.0/24
	 ip prefix-list AS65530 permit 10.3.0.0/16
	 ip prefix-list AS65531 description Bar.Com
	 ip prefix-list AS65531 seq 5 permit 192.168.1.0/24
	 ip prefix-list AS65531 seq 10 permit 192.168.2.0/24
	 ip prefix-list AS65531 seq 15 permit 192.168.0.0/19

       is optimised as follows:

	 ip prefix-list AS65530 permit 10.1.0.0/16 le 24
	 ip prefix-list AS65530 permit 10.2.0.0/15 le 24
	 ip prefix-list AS65531 permit 192.168.0.0/19 le 24

SEE ALSO

       aggregate(1)

HISTORY

       Aggregate-ios was written by Joe Abley <jabley@mfnx.net>.

BUGS

       All those in aggregate(1) and then some :)

Joe Abley							 2000 November 27						  AGGREGATE-IOS(1)
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