[RndTbl] Oh great RE master

[Steve Moffat]

Hi All;
I've been trying to write a sed function to return only a numeric portion
of a string, but can't seem to get it working.
The input is a single string of letters and numbers, with the numbers
always consecutive.
For example:  BUILD-AM005-a

I want to get the 005 out of this string.

echo  BUILD-AM005-a | sed 's/.*\([[:digit:]]\).*/\1/g'

will return the digit 5.  This is good!

So I add an asterisk to try to match multiple digits like:
echo  BUILD-AM005-a | sed 's/.*\([[:digit:]]*\).*/\1/g'

and instead of returning 005, it doesn't match anything, so returns
nothing.

Can any of you RE maters help me out?

Steve Moffat
IBM Global Services
sjm at ca.ibm.com
(204)792-3245
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