On 09/11/07 15:39:54, Stuart Guthrie wrote:
> Not being a regex expert I was hoping someone
> could point me at a list, forum or just give
> me a pointer on how to achieve this:
>
> Field that must have 2 out of 3 of these:
>
> standard a-z/A-Z
> arabic numbers 0-9
> special chars %$#@
A crude but effective method is to delete one only instance of each
regex and then compare the string lengths. For example,
#!/bin/bash
EXPRESSION0="ABCDefgh1234%$#@"
EXPRESSION1=`echo "$EXPRESSION0" | sed '
s/[A-Za-z]//
s/[0-9]//
s/[EMAIL PROTECTED]//'`
echo "${#EXPRESSION0}"
echo "${#EXPRESSION1}"
HTH,
Robert Thorsby
Where a computer like the ENIAC is equipped with 18,000
vacuum tubes and weighs 30 tons, computers in the future
may have only 1,000 vacuum tubes and weigh only 1 1/2 tons.
-- Popular Mechanics, March 1949
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