Feature request: read from stdin
It would be handy if ligo_channel_completion could operate in a pipeline on the command line. Specifically, allow it to take a list of channels from stdin:
nds_query -1 -n l1nds0 -p 8088 -l | awk '/:/ {print $1}' | /usr/lib/ligo_channel_completion > /opt/rtcds/llo/l1/cds/l1daqchannels.txt