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The option cursor-file takes a filename as argument. If the file exists and
contains a valid cursor, this is used to start the output after this position.
At the end, the last cursor gets written to the file.
This allows for an easy implementation of a timer that regularly looks in the
journal for some messages.
journalctl --cursor-file err-cursor -b -p err
journalctl --cursor-file audit-cursor -t audit --grep DENIED
Or you might want to walk the journal in steps of 10 messages:
journalctl --cursor-file ./curs -n10 --since=today -t systemd
Also, while we are at it, beef it up, by adding json-seq support (i.e.
https://tools.ietf.org/html/rfc7464). This is particularly useful in
conjunction with jq's --seq switch.
This also unifies __filter_units_by_property() and
__filter_units_by_properties(), and makes completion for 'restart',
'reload' or 'stop' show more candidates.
Usecase is to allow changing the final kill from SIGKILL to SIGQUIT which
should create a core dump useful for debugging why the service didn't stop
with the SIGTERM
Template units lacking DefaultInstance cannot be enabled/disabled or
started/restarted.
By adding DefaultInstance the unit can be enabled/disabled but it
still cannot be started/restarted.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Earlier patch added the current word to the performance critical paths.
Here we add it to every place, for consistency sake.
Suggested-by: Yu Watanabe (yuwata)
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Pass the partial name of the unit file to list-unit-files and
list-units. This allows for faster completion, since systemctl does
not need to list all the unit files.
For reference:
- time systemctl list-unit-files -> ~200ms
- time systemctl list-unit-files netctl* -> ~15ms
- time systemctl list-units -> ~5ms
- time systemctl list-units netctl* -> ~5ms
While the list-units time itself is unaffected, now a shorter list is
produced. Thus as we pass it to `systemctl show' (via
__filter_units_by_properties) the execution time will be decreased even
further.
v2: Update list-units hunk in commit message, add quotes around $2*
v3: Remove funky indentation, quote all $cur instances
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
