bin/df-uptime: New script

1 files changed, 110 insertions, 0 deletions

diff --git a/bin/df-uptime b/bin/df-uptime
new file mode 100755
index 0000000..64ac8b4
--- /dev/null
+++ b/bin/df-uptime
@@ -0,0 +1,110 @@
+#!/bin/sh
+
+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='^..*  *..*  *..*  *..*  *\([0-9][0-9]*%\) \(..*\)$'
+	df -h -x devtmpfs -x tmpfs | \
+		sed "1d; s/${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 [ ${#} -ne 0 ]; then
+		usage 1>&2
+		return 1
+	fi
+
+	do_df
+	do_uptime
+
+	return 0
+}
+
+main "${@}"