source: dotfiles/guix/.config/i3blocks/disk@ eaffc2c

#!/bin/sh
# Copyright (C) 2014 Julien Bonjean <julien@bonjean.info>

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

DIR="${DIR:-$BLOCK_INSTANCE}"
DIR="${DIR:-$HOME}"
ALERT_LOW="${ALERT_LOW:-$1}"
ALERT_LOW="${ALERT_LOW:-10}" # color will turn red under this value (default: 10%)

LOCAL_FLAG="-l"
if [ "$1" = "-n" ] || [ "$2" = "-n" ]; then
    LOCAL_FLAG=""
fi

df -h -P $LOCAL_FLAG "$DIR" | awk -v label="$LABEL" -v alert_low=$ALERT_LOW '
/\/.*/ {
        # full text
        print label $4

        # short text
        print "HDD: " $3 "/" $2

        use=$5

        # no need to continue parsing
        exit 0
}

END {
        gsub(/%$/,"",use)
        if (100 - use < alert_low) {
                # color
                print "#FF0000"
        }
}
'