usage="start        -- resume stopped pipeline\
\
Usage:\
    start <pid>...\
    start -h | --help\
Options:\
    -h --help   Show this message.\
    <pid>       Pipeline id, obtained from ps\
"

if ! docopt $usage $*; then
    exit false
fi

for i in $pid; do echo 'start' >/proc/$i/ctl; done
