linux: Add baraction script

linux/baraction.sh

@@ -0,0 +1,99 @@
+#!/bin/sh
+# Example Bar Action Script for Linux.
+# Requires: acpi, iostat.
+# Tested on: Debian 10, Fedora 31.
+#
+
+print_date() {
+	# The date is printed to the status bar by default.
+	# To print the date through this script, set clock_enabled to 0
+	# in spectrwm.conf.  Uncomment "print_date" below.
+	FORMAT="%a %b %d %R %Z %Y"
+	DATE=`date "+${FORMAT}"`
+	echo -n "${DATE}     "
+}
+
+print_mem() {
+	MEM=`/usr/bin/free -m | grep ^Mem: | sed -E 's/ +/ /g' | cut -d ' ' -f4`
+	echo -n "Free mem: ${MEM}M  "
+}
+
+_print_cpu() {
+	printf "CPU: %3d%% User %3d%% Nice %3d%% Sys %3d%% Idle  " $1 $2 $3 $6
+}
+
+print_cpu() {
+	OUT=""
+	# Remove the decimal part from all the percentages.
+	while [ "${1}x" != "x" ]; do
+		OUT="$OUT `echo "${1}" | cut -d '.' -f1`"
+		shift;
+	done
+	_print_cpu $OUT
+}
+
+print_cpuspeed() {
+	CPU_SPEED=`/usr/bin/lscpu | grep '^CPU MHz:' | sed -E 's/ +/ /g' | cut -d ' ' -f3 | cut -d '.' -f1`
+	printf "CPU speed: %4d MHz  " $CPU_SPEED
+}
+
+print_bat() {
+	AC_STATUS="$3"
+	BAT_STATUS="$6"
+	# Most battery statuses fit into a single word, except "Not charging"
+	# for which we need to have special handling.
+	if [ "$BAT_STATUS" = "Not" ]; then
+		BAT_STATUS="$BAT_STATUS $7"
+		shift
+	fi
+	BAT_LEVEL="`echo "$7" | tr -d ','`"
+
+	if [ "$AC_STATUS" != "" -o "$BAT_STATUS" != "" ]; then
+		if [ "$BAT_STATUS" = "Discharging," ]; then
+			echo -n "on battery ($BAT_LEVEL)"
+		else
+			case "$AC_STATUS" in
+			on-line)
+				AC_STRING="on AC: "
+				;;
+			*)
+				AC_STRING=""
+				;;
+			esac
+			case "$BAT_STATUS" in
+			"")
+				BAT_STRING="(no battery)"
+				;;
+			*harging,|Full,)
+				BAT_STRING="(battery $BAT_LEVEL)"
+				;;
+			*)
+				BAT_STRING="(battery unknown)"
+				;;
+			esac
+
+			FULL="${AC_STRING}${BAT_STRING}"
+			if [ "$FULL" != "" ]; then
+				echo -n "$FULL"
+			fi
+		fi
+	fi
+}
+
+# Cache the output of acpi(8), no need to call that every second.
+ACPI_DATA=""
+I=0
+while :; do
+	IOSTAT_DATA=`/usr/bin/iostat -c | grep '[0-9]$'`
+	if [ $I -eq 0 ]; then
+		ACPI_DATA=`/usr/bin/acpi -a 2>/dev/null; /usr/bin/acpi -b 2>/dev/null`
+	fi
+	# print_date
+	print_mem
+	print_cpu $IOSTAT_DATA
+	print_cpuspeed
+	print_bat $ACPI_DATA
+	echo ""
+	I=$(( ( ${I} + 1 ) % 11 ))
+	sleep 1
+done