Unique String

azmathshaikh · #1 (**permalink**) 08-21-2005

Hi,

While creating users in one of my application, the passowrd for the user has to obey the following rules.

password cannot be the same as the user name
password must have a minimum of six characters
password must have a maximum of 100 characters
password must have at least one alpha character
password must have at least one numeric character.
password cannot contain two consecutive equal alphabets (aa)

I am creating users using a script and generating random string for the password. But the last rule worries me. How can we check the passowrd to find out if there are two consecutive alphabets(Rule 6)???

Thanks in advance

zazzybob · #2 (**permalink**) 08-21-2005

Here's something to start you off - probably a more effecient way but anyway

Code:

$ cat ./azmath.ksh
#!/bin/ksh

passwd=bbcddefghhi12334

echo "${passwd}" | awk 'BEGIN { old_a = "unset" }
                        { split ($0,a,"") }
                        END { for ( i = 0; i <= length($0); i++ )
                             {
                                if ( old_a == a[i] && a[i] !~ /[0-9]/ ) {
                                   printf( "Duplicate %s\n", a[i] )
                                }
                                old_a = a[i]
                             }
                        }'
$ ./azmath.ksh
Duplicate b
Duplicate d
Duplicate h

Cheers
ZB

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