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#!/bin/sh
#
# df-uptime -- Panel applet to monitor file system free space and system uptime
#
# Copyright (C) 2018 Patrick "P. J." McDermott
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
set -eu
indent=''
le="$(printf '\n.')"; le="${le%.}"
err()
{
local fmt="${1}"
shift 1
printf "Error: ${fmt}\n" "${@}" 1>&2
return 0
}
gen_indent()
{
local l=${1}
shift 1
local i=
i=0
while [ ${i} -lt ${l} ]; do
indent="${indent} "
i=$((${i} + 1))
done
return 0
}
do_df()
{
local sed_bre=
sed_bre='^..* *..* *..* *..* *\([0-9][0-9]*%\) \(..*\)$'
df -x devtmpfs -x tmpfs | \
sed "1d; s/${sed_bre}/${indent}\\1 \\2/;" | tr '\n' "${le}"
return 0
}
do_uptime()
{
local up=
local idle=
local min=
local hr=
local day=
read -r up idle 0</proc/uptime
up="${up%.*}"
min=$((${up} / 60))
hr=$((${min} / 60))
day=$((${hr} / 24))
min=$((${min} % 60))
hr=$((${hr} % 24))
printf '%sUp %d d %2d:%02d%c' "${indent}" ${day} ${hr} ${min} "${le}"
return 0
}
usage()
{
printf 'Usage: %s [<options>]\n' "${0}"
printf '\n'
printf 'Options:\n'
printf ' -i <num> Indent lines with <num> spaces\n'
printf ' -r Print carriage returns instead of line feeds\n'
return 0
}
main()
{
local opt=
while getopts 'i:r' opt "${@}"; do
case "${opt}" in
'i')
case "${OPTARG}" in *[!0-9]* | '')
usage 1>&2
return 1
esac
gen_indent ${OPTARG}
;;
'r') le="$(printf '\r.')"; le="${le%.}";;
'?')
usage 1>&2
return 1
;;
esac
done
shift $((${OPTIND} - 1))
if [ ${#} -ne 0 ]; then
usage 1>&2
return 1
fi
do_df
do_uptime
return 0
}
main "${@}"
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