This seems to work but requires to use the first submatch:
((\w*)-.*)
Cheers,
JB
Le 2022-11-30 14:04, Arild Sather via rsyslog a écrit :
Hi,
I thought I was fairly useful at regexes, until I met rsyslog. Which
has
me severely stumped.
I am trying to parse a really simple string:
ncy-rest01-hel.example.com
to extract the "nyc" part (i.e everything in front of the '-' ). Now,
usually I would simply use:
(\w*)-.*
and point at the capture group. But nope, that won't match. Fine, I
thought. Maybe:
(\w*)-(.*)
And specify the first capture group. But no. Basically, the only thing
that halfway works is:
(\w*)
...but the problem is that will also match:
nope.example.com
without a dash in the hostname. Which it should not (and thus trigger a
nomatch).
The regex checker is not explaining what is going on, and regex101 does
not support things like ERE or BRE, so that's no help...
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