peek at the cgroup stats in sysfs for a docker container

container-stats.bash

#!/bin/bash
#
# Get docker container sysfs info
#
# Usage
# ./container-stats.bash <docker container id>
#
# Docker container id's can be found using
# docker ps -notrunc
#
function main {
    local container_id="$1"; shift
    local cgroup=/sys/fs/cgroup

    for resource in cpu memory; do
        local d=$cgroup/$resource/docker/$container_id

        for f in $(find $d -name "*$resource*"); do
            basename $f
            cat $f | sed -r 's/^/\t/'
        done
    done
}

main "$@"