On 6 March 2015 at 14:38, Daurnimator <q...@daurnimator.com> wrote: > sd_journal_query_unique() finds unique *field names*. > Not journal entries.
Apologies, I described this incorrectly. sd_journal_query_unique() takes a field name, and allows you to iterate over all different values that field has taken. To accomplish a wildcard or pattern matched search, you can iterate through unique fields, adding all that meet your pattern as matches. Here is an example lua program that will print (in reverse) matches for the given field and (lua) pattern: #!/usr/bin/env lua --[[ Depends on lua-systemd: https://github.com/daurnimator/lua-systemd ]] local sj = require "systemd.journal" local field = assert(arg[1], "need to provide field name") local patt = assert(arg[2], "need to provide a pattern") local j = assert(sj.open()) assert(j:seek_tail()) assert(j:flush_matches()) local has_at_least_one = false for value in j:each_unique(field) do if value:match(patt) then has_at_least_one = true assert(j:add_match(field.."="..value)) end end if not has_at_least_one then io.stderr:write("no matches found\n") os.exit(1) end assert(j:add_disjunction()) while j:previous() do print(j:get("_SYSTEMD_UNIT"), j:get("MESSAGE")) end _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
