unix Ksh script variable

From: A Joshi <ajoshi977_at_yahoo.com>
Date: Sun, 30 Jan 2011 19:55:04 -0800 (PST)
Message-ID: <770572.52317.qm_at_web57505.mail.re1.yahoo.com>

hi
I have a script which is to be executed on many databases and different databases have different log in users/password. Login needs to be chosen based on parameter passed so if the parameter passed is 1 it needs to choose user1 and so on. I will be doing sqlplus $usr_at_$DB and need usr to have the value sys in this case and so on it is something like -

user1=sys 
user2=system 
user3=emp 
pw1=x 

pw2=xx
pw3=xxx
#number=$1
number=1
us=user
usr=$us$number
export user1 user2 user3 number us usr
export pw1 pw2 pw3
echo $user1
I tried in below ways but it is not working echo $usr
export $usr ="$user1"
echo $usr

echo ${!$usr} 
echo ${!usr} 
echo $"$usr" 

echo `echo $"$usr"`
can someone help.thanks in advance       

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Received on Sun Jan 30 2011 - 21:55:04 CST