Because muxd uses ptrace, you must run with elevated priveledges / sudo.
Capture stdout/stderr from multiple processes and mux or demux them
e.g. muxd --outdir=/tmp --pids=1,2,-3 -- ping google.com
Usage:
muxd [OPTION...] positional parameters
-p, --pids arg The pid or list of pids to capture from (use
negative to capture the entire process group). e.g.
--pids=1,2,-3
-o, --outdir arg The directory where all logs will be written to.
e.g. --outdir="/tmp" (default)
-r, --file-regex arg Test a regex against a full file path to see if
it should be included in the output (stdout and
stderr are special keywords). e.g.
--file-regex="stdout|stderr" (default)
-f, --filename-format arg Timestampped format for the filename of a log.
See http://bit.ly/date-format for details. You can
also use %P for process name, %i for pid, and %f
for original filename e.g.
--filename-format="%P:%i_%f_%F_%T_%z.log" (default)
-l, --line-format arg Timestampped format for each line in a log. See
http://bit.ly/date-format for details. You can
also use %P for process name, %i for pid, %f for
original filename, and %l for the line text. If
left empty, the contents will be written unmodified
e.g. --line-format="[%F %T %z] %l%n" (default)
-z, --time-zone arg Time zone that we print all dates in. See
http://www.iana.org/time-zones for details. If set to
empty "", the local time zone is used. e.g.
--time-zone="UTC" (default)
-h, --help Print usage
You must have docker installed to build. Tested with Docker version 19.03.2, build 6a30dfca03. To build run:
./build.shThe output will be at ./build/muxd.