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#!/bin/bash
DF="/usr/bin/df"
usage() {
echo 'usage: dfp [-p PREFIX] DEVICE...'
echo
echo ' -p print given prefix at the begin of each line'
echo ' -h display this help and exit'
exit
}
while getopts ":hp:" optname; do
case "$optname" in
"p")
prefix=$OPTARG
;;
"h")
usage
;;
"?")
echo "Unknown option $OPTARG"
usage
;;
":")
echo "No argument value for option $OPTARG"
;;
*)
echo "Unknown error while processing options"
;;
esac
done
IFS=$"NUL"
declare -a args=${@:$OPTIND}
[[ ${args:0} ]] || args=$(df --output=target | tail --lines=+2 | tr "\n" $"NUL")
for device in $args; do
if ! [[ "$($DF $device)" ]]; then
usage
fi
done
for device in $args; do
size="$($DF $device --output=size | tail --lines=+2)"
avail="$($DF $device --output=avail | tail --lines=+2)"
used="$((size - avail))"
availh="$($DF -h $device --output=avail | tail --lines=+2)"
sizeh="$($DF -h $device --output=size | tail --lines=+2)"
misc="$availh$sizeh"
title="$prefix$device"
pbar -n $used $size "$title" "$misc"
done
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