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replacing specific characters in a string

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# 1  
Old 08-20-2008
replacing specific characters in a string
Hi Friends,

Following is an output of a script

OPWQERIUTYKLSADFJHGXZNMCVBWQOPERIUTYKLSADFJHGXZNMCVB

I want to replace above string's 11 to 17 character by ******* (7 stars)
How can it be done?
Please somebody guide me.
# 2  
Old 08-20-2008
try:
Code:
echo -n `echo $str | cut -c 1-10` ; echo -n '*******' ; echo $str | cut -c 18-

# 3  
Old 08-20-2008
You can use like this

$ a='OPWQERIUTYKLSADFJHGXZNMCVBWQOPERIUTYKLSADFJHGXZNMCVB'

$ echo $a | awk '{line=substr($0, 11,7);sub(line,"*******",$0);print $0; }'
# 4  
Old 08-20-2008
great manoj!
# 5  
Old 08-20-2008
And another way:

Code:
echo $a | sed 's/^\(.\{10\}\).\{7\}/\1*******/'

# 6  
Old 08-20-2008
Thank you very very much Yogesh & Manoj.. both the suggestions are perfectly working.
Thank you once again
Bye & take care
# 7  
Old 08-20-2008
Code:
echo OPWQERIUTYKLSADFJHGXZNMCVBWQOPERIUTYKLSADFJHGXZNMCVB |
sed 's/\(.\{1,10\}\)\(.\{1,7\}\)\(.*\)/\1*****\3/'> sed 's/\(.\{1,10\}\)\(.\{1,5\}\)\(.*\)/\1*****\3/'

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