added quick powersave script

.gitignore

@@ -0,0 +1,2 @@
+powersave
+undervolt

Makefile

@@ -3,19 +3,23 @@ PREFIX = /usr/local
 MANPREFIX = ${PREFIX}/share/man
 
 undervolt: undervolt.sh
+powersave: powersave.sh
 
-install: undervolt
+install: undervolt powersave
 	mkdir -p ${DESTDIR}${PREFIX}/bin
 	cp -f undervolt ${DESTDIR}${PREFIX}/bin/undervolt
+	cp -f powersave ${DESTDIR}${PREFIX}/bin/powersave
 	chmod 755 ${DESTDIR}${PREFIX}/bin/undervolt
+	chmod 755 ${DESTDIR}${PREFIX}/bin/powersave
 # TODO: add a manual page
 #	mkdir -p ${DESTDIR}${MANPREFIX}/man1
 #	sed "s/VERSION/${VERSION}/g" < undervolt.1 > ${DESTDIR}${MANPREFIX}/man1/undervolt.1
 #	chmod 644 ${DESTDIR}${MANPREFIX}/man1/undervolt.1
 
 uninstall:
-	rm -f ${DESTDIR}${PREFIX}/bin/undervolt\
-		${DESTDIR}${MANPREFIX}/man1/undervolt.1
+	rm -f ${DESTDIR}${PREFIX}/bin/undervolt                                \
+		${DESTDIR}${MANPREFIX}/man1/undervolt.1                        \
+		${DESTDIR}${PREFIX}/bin/powersave
 
 clean:
 	rm -f undervolt

powersave.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+GOVERNOR='powersave'
+if [ "$1" ]; then
+	GOVERNOR="$1"
+fi
+
+echo "$GOVERNOR" | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor