contrib/count_labels

#!/bin/bash
#
# Copyright 2014 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# count_labels:  Print a summary of how many times a particular label
# value occurs in the output of an `atest host list` command.
#
# To find the sizes of the pools assigned to a board:
#     atest host list -b board:$BOARD | count_labels -p
#
# To find how many of each board is assigned to a pool:
#     atest host list -b pool:$POOL | count_labels -b

while getopts 'pbv' flag
do
    case $flag in
        p) LABEL=pool ;;
        b) LABEL=board ;;
        v) LABEL=variant ;;
    esac
done

sed -e "/$LABEL:/ !d" -e "s=.*$LABEL:\([^,]*\).*=\1=" | sort | uniq -c