On Mon, Mar 9, 2015 at 1:44 AM, Mantas Mikulėnas <graw...@gmail.com> wrote: > On Mon, Mar 9, 2015 at 12:53 AM, Lennart Poettering <lenn...@poettering.net> > wrote: >> >> On Fri, 06.03.15 21:28, Chris Morgan (chmor...@gmail.com) wrote: >> >> > >> > http://www.freedesktop.org/software/systemd/man/sd_journal_add_match.html >> > is pretty clear that the matches are in the form of 'FIELD=value' but >> > it doesn't mention the why. >> > >> > What if I've written a field like "FIELD", can I then match on it as >> > "FIELD"? >> >> Hmm, not sure I understand what you mean? >> >> The journal stores key/value pairs, on display and when parsing we >> denote them in the form of an uppercase fied name, followed by a "=", >> followed by any kind of data. >> >> Hence, just "FIELD" is not something the journald would or could >> store. If you try to pass this to journald for it to write, it would >> drop this, because it's malformed and not a key/value pair. > > > I think the idea was just to *match* all entries that have a given key > *present* but with any value? >
Correct. Otherwise I need to insert yet another tag like "SOME_IDENTIFIER=1" that is present in all of my entries in order to be able to use that interface to efficiently look up journal entries. Chris _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
