Create volum.sh

volume.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+# a script to fade the volume to a given volume
+# -e: volume where the fade ends at, Defaults to 50
+# -s: volume where the fade start at, Defaults to current volume
+# -w: wait time, the time between each volume change
+
+# gets the average of left and right volume
+START_VOL=$((($(cmus-remote -Q | grep -e "vol_left" | cut -d ' ' -f3) + $(cmus-remote -Q | grep -e "vol_right" | cut -d ' ' -f3)) / 2))
+END_VOL=50
+
+SLEEP_TIME=0.01
+
+function getOptions() {
+  local flag
+  while getopts "s:e:w:h" flag; do
+    case "$flag" in
+    s) START_VOL=$OPTARG ;;
+    e) END_VOL=$OPTARG ;;
+    w) SLEEP_TIME=$OPTARG ;;
+    h)
+      echo "a script to fade the volume to a given volume"
+      echo "-e: volume where the fade ends at, Defaults to 50"
+      echo "-s: volume where the fade start at, Defaults to current volume"
+      echo "-w: wait time, the time between each volume change"
+      ;;
+    *)
+      echo "Unknown option: -$OPTARG" >&2
+      exit
+      ;;
+    esac
+  done
+}
+
+function main() {
+  local vol
+  for vol in $(seq "$START_VOL" "$END_VOL"); do
+    cmus-remote -v "$vol" # set volume
+    sleep "$SLEEP_TIME"   # wait volume
+  done
+}
+getOptions "$@"
+
+main & # in parallel so we can use the terminal while the volume is changing