Thank You corona, rdcwayx
Your script worked perfectly for me.
I have one more question. Why is IFS=':' bit placed inside the WHILE loop ?

I tried placing IFS=':' outside the WHILE loop, like

Code:

IFS=":"
while  read IP NAME
do
           # MY commands

done < mylist.txt

It worked correctly for some lines, but for some lines i got the following error.

Code:

ksh[6]: vsping:     not found
ksh[3]: grep:     not found
ksh[3]: cut:     not found
ksh[3]: wc:     not found

I wasn't using grep or cut or wc. Don't know how i got these commands in the error.

THANK YOU.

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