Thank you for the answer, Mr. Korschan, It worked! I misunderstood "the regular expression" as the one of the shells. Thanks a lot!

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The problem is '*' '?', or '+' in match() function. The following filter below seems to fail.

------------------------------- filter f1 { match("abc*");}; ---------------------------------

I also tried match("abc\*"), match("abc\\*"), but those didn't work too. I know match("abc") is enough to resolve the sample problem, and it worked, but I want to make a filter like "abc*:xyz".

Dose the match() function really resolve the regular expression? Or is the way I use match() wrong?

Hmm - I assume you want to match "abc*:xyz":

try match("abc.*") or match("abc.*:xyz")

to be really exact you can try match("^abc.*:xyz$")

Not that ".*" matches 0 or more characters, "\*" would match exactly one "*"

See regexp(5) (section may differ in your case)

regards -- Christian Korschan Systems Specialist CTBTO/IDC Vienna International Centre Email: Christian.Korschan@CTBTO.ORG P.O. BOX 1200 Phone: +43(1)26030 6184 A-1400 Vienna, Austria FAX: +43(1)26030 5932