Add volume increment setting capability.

M  README
   Expanded.
M  vlm
   Add INC argument to increase and decrease sub-commands.
   Expand usage information output.

1 files changed, 16 insertions, 3 deletions

diff --git a/vlm b/vlm
index b4b279b..fe62be4 100755
--- a/vlm
+++ b/vlm
@@ -45,10 +45,20 @@ fi
 
 case "$1" in
     increase)
-        pactl set-sink-volume ${SINKS[$IS]} "+5%"
+        if test "x$2" = "x"
+        then
+            pactl set-sink-volume ${SINKS[$IS]} "+5%"
+        else
+            pactl set-sink-volume ${SINKS[$IS]} $2
+        fi
         ;;
     decrease)
-        pactl set-sink-volume ${SINKS[$IS]} "-5%"
+        if test "x$2" = "x"
+        then
+            pactl set-sink-volume ${SINKS[$IS]} "-5%"
+        else
+            pactl set-sink-volume ${SINKS[$IS]} $2
+        fi
         ;;
     togglemute)
         pactl set-sink-mute ${SINKS[$IS]} toggle
@@ -67,7 +77,10 @@ case "$1" in
         done
         ;;
     *)
-        echo "Usage: /usr/local/bin/pavolctrl {increase|decrease|togglemute|nextsink}"
+        echo "Usage: vlm {increase [INC]|decrease [INC]|togglemute|nextsink}"
+        echo "  Volume increment INC is given as is to pactl."
+        echo "  Default INC is +5% for increase, -5% for decrease."
+        echo "  nextsink cycles audio outputs e.g. sound cards, usb, ..."
         exit 2
         ;;
 esac