Thank-you for s6-rc and friends. I came across two items: 1. the s6-log in testing requires a control directive. In my testing without a T, t, n $VALUE for example, the s6-log command failed. 2. The regular expression preceded by a + unintentionally matches everything, which was surprising as I intended to maintain separate logs which emanated from the same process (apache24)
So to testing. My test comprised an input /tmp/af with the intention of four separate s6-log managed logdirs. The logdirs' structure was correctly created, however three contained the same content, and the default contained nothing. So the reduced form of testing looks like this: # cat /tmp/af # a file of text to be processed a line of text not selected b nother line of text c more lines [date] with line of text The intention is to create a separate log based on a regex of the first character. Unfortunately the selection mechanism failed and the entire content of the test file (/tmp/af) was duplicated, ie unselectively. The following places the content of /tmp/af into /tmp/date-only. #!/usr/local/bin/execlineb -P ; # The testing script redirfd -r 0 /tmp/af /usr/local/bin/s6-log -b n3 +^\\\[ /tmp/date-only f s100 S1500 T /tmp/default The following works correctly, in that date-only does not contain the [date] line. It does contain the rest of /tmp/af, while /tmp/default does contain only the date (input line). # cat s6-test.sh #!/usr/local/bin/execlineb -P redirfd -r 0 /tmp/af /usr/local/bin/s6-log -b n3 -^\\\[ /tmp/date-only f s100 S1500 T /tmp/default Incidentally using the s6-log command /usr/local/bin/s6-log -b n3 +^\\\[ /tmp/date-only s10 S150 T +^b /tmp/b-only f s100 S1500 T /tmp/default results in both /tmp/date-only/current and /tmp/b-only/current containing all of /tmp/af, /tmp/default had the expected structure but empty current file. The platform is amd64 FreeBSD 11.2Stable built May 6, clang v7.0.0 and clang 8.0.0 PS I haven't made sense of the hyphen in the example, after "E500 - " on page https://www.skarnet.org/software/s6/s6-log.html. Testing resulted in s6-log: fatal: unrecognized directive: -
