On Tue, Jul 16, 2013 at 01:43:04PM +0200, Lennart Poettering wrote: > On Tue, 16.07.13 09:42, Till Maas (opensource@xxxxxxxxx) wrote: > > > > journalctl only supports local time specifications when you > > > specify calendar times. Unfortunately there's no nice API to map > > > calendar times that include time zone specifications back to UTC, in > > > particular because the time zone names are not unique... > > > While it will be hard to support arbitrary timezone specs in --since= it > > > should be relatively easy to support UTC in addition to the local > > > timezone. Added this to the TODO list. > > > > You only need to add or subtract hours and minutes from the local time, > > because ISO 8601 dates contain the UTC offset: > > > > | $ date --iso-8601=seconds > > | 2013-07-15T22:37:04+0200 > > Well, we can certainly add support for such numeric timezone specs > (added to the TODO list), but I have my doubts that this is actually > what people want to use in their day-to-day use, given that the numbers > are hard to remember. Thank you. > I am pretty sure that most folks would like to specify symbolic timezone > names, but that's hard to do due to lack of APIs for that, and the > non-uniqueness of the names. I guess for most use cases using the local time zone is enough. Btw. can journalctl output ISO 8601 dates instead of the US formated date without a year? I really expected journalctl to cleanup this as well. > > > Note that the journal actually knows a concept called "cursors". The > > > cursors are a way to refer to a specific log line (or the closest > > > available one) in a stable way. by using this you can make a logic like > > > the above work nicely, and even remove any inaccuracy regarding > > > timestamps... > > > > The manpage only mentions how to specify which cursor to use but not how > > to get the cursor of the last read line. > > journalctl -o verbose will give you that (and so will -o json, -o export > and others), but the rest of the output is very low-level then. Maybe we > can add a switch that prints the final cursor as last line if you > specify some switch. The extra switch sounds useful. Regards Till -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
