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regular expression to match a pattern

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Posted by Rajeev   (1 post)  [Biography] bio
Date Wed 11 Dec 2002 12:13 PM (UTC)  [ quote  ]
Message
I want to write a regular expresssion that matches a string containing atlease one small case letter, one upper case letter, one digit and must be atleast be atleast 8 character long.

can someone help me writing such expression ?

thanks
Rajeev
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Posted by Nick Gammon   Australia  (18,772 posts)  [Biography] bio   Forum Administrator
Date Reply #1 on Thu 12 Dec 2002 05:21 AM (UTC)  [ quote  ]
Message
I presume you mean, in any order, and that the other 5 characters are from the same group? I don't think you can do that in one regular expression, but you could go a fair way, and test the resulting string in a script. Something like this:

([A-Za-z0-9]{8,})

Then in a script use "instr" to confirm that you got one from each group you mention.
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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