diff options
| author | Lennart Poettering <lennart@poettering.net> | 2012-10-18 03:29:19 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2012-10-18 03:35:18 +0200 |
| commit | 3c1668da6202f1ead3d4d3981b89e9da1a0e98e3 (patch) | |
| tree | d4e2785f1dac02c19797373bb4342354e1958e9d /src/journal/journalctl.c | |
| parent | 86b2e20a5e5abf222fb81edcb5d58d012e35cbaa (diff) | |
journal: add ability to list values a specified field can take in all entries of the journal
The new 'unique' API allows listing all unique field values that a field
specified by a field name can take in all entries of the journal. This
allows answering queries such as "What units logged to the journal?",
"What hosts have logged into the journal?", "Which boot IDs have logged
into the journal?".
Ultimately this allows implementation of tools similar to lastlog based
on journal data.
Note that listing these field values will not work for journal files
created with older journald, as the field values are not indexed in
older files.
Diffstat (limited to 'src/journal/journalctl.c')
| -rw-r--r-- | src/journal/journalctl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c index 665b325a94..ebb88e053e 100644 --- a/src/journal/journalctl.c +++ b/src/journal/journalctl.c @@ -74,6 +74,7 @@ static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC; static usec_t arg_since, arg_until; static bool arg_since_set = false, arg_until_set = false; static const char *arg_unit = NULL; +static const char *arg_field = NULL; static enum { ACTION_SHOW, |