How to append to array within conditional block in ksh/korn shell? Post: 302808275

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Top Forums Shell Programming and Scripting How to append to array within conditional block in ksh/korn shell? Post 302808275 by sanzee007 on Thursday 16th of May 2013 10:30:17 AM

05-16-2013

Registered User

How to append to array within conditional block in ksh/korn shell?

Hi,
I have one array created and some values are there in ksh. I want to append some other values to it based on some condition in if statement.

Code:

#!/bin/ksh
echo "---------------------------------------------------"
        set -A ipaddr_arr $(egrep -v '^#|^::|^$' /etc/hosts |awk '{print $1}' | uniq) #hosts ips
        set +A ipaddr_arr $(egrep -v '^#|^::|^$' /etc/hosts |awk '{print $1}') 


        if [ "$os" = "solaris" ]
        then
                set +A ipaddr_arr $(egrep -v '^#|^::|^$' /etc/hosts |awk '{print $1}')
        else
               #some other statement
        fi

        COUNT=0
        for str in ${ipaddr_arr[*]}
        do
                echo "$str"
                COUNT=$((COUNT+1))
        done

However after the if condition is executed as true, the array does not contain previous values. The statement within if overwrites the array values, without appending the values to it. As in ksh, +A is for appending values to array. However here it is not behaving properly.

I tried with only giving this in if block, still it gives error in ksh-

Code:

+A ipaddr_arr $(egrep -v '^#|^::|^$' /etc/hosts |awk '{print $1}')

Anyone have any clues..
thanks in advance for your replies.

Last edited by zaxxon; 05-16-2013 at 11:58 AM.. Reason: more code tags

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suspend

suspend(1)                                                         User Commands                                                        suspend(1)

NAME

       suspend - shell built-in function to halt the current shell

SYNOPSIS

   sh
       suspend

   csh
       suspend

   ksh
       suspend

DESCRIPTION

   sh
       Stops the execution of the current shell (but not if it is the login shell).

   csh
       Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.

   ksh
       Stops the execution of the current shell (but not if it is the login shell).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                         suspend(1)

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