diff --git a/.bin/pipewire-sink.sh b/.bin/pipewire-sink.sh deleted file mode 100755 index 826bcff..0000000 --- a/.bin/pipewire-sink.sh +++ /dev/null @@ -1,19 +0,0 @@ -#!/bin/sh -# src: https://codeberg.org/trill/dotfiles/src/branch/master/.local/bin/i3blocks/pipewire-sink.sh - -# `pactl list sinks` shows sink properties with a mix of english language and local language -# defined by LANG env var, so we unset the var to guarantee only the fallback language is used -unset LANG; -sink_list="$(wpctl status | sed -n '/^Audio/,/Sink endpoints:/p' | sed -n '/Sinks:/,/|\s*$/p' | head -n -2 | tail -n +2 | tr -d '│')" - - -CONTENT="$sink_list" -OPTION_SELECTED=$(echo "$CONTENT" \ - | rofi -dmenu -location 2 \ - | sed -e 's/[^0-9]*\([0-9]*\).*/\1/g') - -echo "" -if ! [[ -z "$OPTION_SELECTED" ]]; then - wpctl set-default "$OPTION_SELECTED" -fi - diff --git a/.bin/rofi_set_default_sink.sh b/.bin/rofi_set_default_sink.sh deleted file mode 100755 index decec83..0000000 --- a/.bin/rofi_set_default_sink.sh +++ /dev/null @@ -1,11 +0,0 @@ -#!/bin/bash - -SELECTED=$(pactl list short sinks |\ - awk '{print $1 " " $2 " " $7}' |\ - column -t |\ - sort -k3 -r |\ - rofi -dmenu -i |\ - awk '{print $2}' -) -echo $SELECTED -pactl set-default-sink $SELECTED diff --git a/.config/i3blocks/config b/.config/i3blocks/config index 8cc2aed..8e2fcaf 100644 --- a/.config/i3blocks/config +++ b/.config/i3blocks/config @@ -46,11 +46,7 @@ signal=10 # The second parameter overrides the mixer selection # See the script for details. [volume] -command=~/.config/i3blocks/volume-pipewire -d -i 1 -H '' -M '' -L '' -X 'm' -#label=VOL -label=♪ -#instance=Master -#instance=PCM +command=~/.config/i3blocks/sb-volume interval=1 signal=10 diff --git a/.config/i3blocks/sb-volume b/.config/i3blocks/sb-volume new file mode 100755 index 0000000..d68aac9 --- /dev/null +++ b/.config/i3blocks/sb-volume @@ -0,0 +1,49 @@ +#!/usr/bin/env bash +# Borrowed from +# https://github.com/LukeSmithxyz/voidrice/blob/7a96fb100cf385e05c211937b509d2bf166299e6/.local/bin/statusbar/sb-volume + +# Prints the current volume or 🔇 if muted. + +function select_output { + local NEW_OUTPUT SINKS + NEW_OUTPUT=$(pw-dump | jq -r '.[] | select(.info.props."media.class"=="Audio/Sink") | "\(.id)\t\(.info.props."node.description")"' | rofi -dmenu -display-columns 2 -p "Select Audio Output" -location 2 | sed -e 's/[^0-9]*\([0-9]*\).*/\1/g') + if ! [[ -z "$NEW_OUTPUT" ]]; then + wpctl set-default "$NEW_OUTPUT" + fi +} + +case $BLOCK_BUTTON in + 1) select_output ;; + 2) wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle ;; + 4) wpctl set-volume @DEFAULT_AUDIO_SINK@ 1%+ ;; + 5) wpctl set-volume @DEFAULT_AUDIO_SINK@ 1%- ;; + 3) notify-send "📢 Volume module" "\- Shows volume 🔊, 🔇 if muted. +- Middle click to mute. +- Scroll to change." ;; + 6) setsid -f "$TERMINAL" -e "$EDITOR" "$0" ;; +esac + +vol="$(wpctl get-volume @DEFAULT_AUDIO_SINK@)" + +# If muted, print 🔇 and exit. +[ "$vol" != "${vol%\[MUTED\]}" ] && echo 🔇 && exit + +vol="${vol#Volume: }" + +split() { + # For ommiting the . without calling and external program. + IFS=$2 + set -- $1 + printf '%s' "$@" +} + +vol="$(printf "%.0f" "$(split "$vol" ".")")" + +case 1 in + $((vol >= 70)) ) icon="🔊" ;; + $((vol >= 30)) ) icon="🔉" ;; + $((vol >= 1)) ) icon="🔈" ;; + * ) echo 🔇 && exit ;; +esac + +echo "$icon$vol%" diff --git a/.config/i3blocks/volume b/.config/i3blocks/volume deleted file mode 100755 index b8d3a2f..0000000 --- a/.config/i3blocks/volume +++ /dev/null @@ -1,71 +0,0 @@ -#!/bin/bash -# Copyright (C) 2014 Julien Bonjean -# Copyright (C) 2014 Alexander Keller - -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. - -# You should have received a copy of the GNU General Public License -# along with this program. If not, see . - -#------------------------------------------------------------------------ - -# The second parameter overrides the mixer selection -# For PulseAudio users, use "pulse" -# For Jack/Jack2 users, use "jackplug" -# For ALSA users, you may use "default" for your primary card -# or you may use hw:# where # is the number of the card desired -MIXER="default" -[ -n "$(lsmod | grep pulse)" ] && MIXER="pulse" -[ -n "$(lsmod | grep jack)" ] && MIXER="jackplug" -MIXER="${2:-$MIXER}" - -# The instance option sets the control to report and configure -# This defaults to the first control of your selected mixer -# For a list of the available, use `amixer -D $Your_Mixer scontrols` -SCONTROL="${BLOCK_INSTANCE:-$(amixer -D $MIXER scontrols | - sed -n "s/Simple mixer control '\([A-Za-z ]*\)',0/\1/p" | - head -n1 - )}" - -# The first parameter sets the step to change the volume by (and units to display) -# This may be in in % or dB (eg. 5% or 3dB) -STEP="${1:-5%}" - -#------------------------------------------------------------------------ - -capability() { # Return "Capture" if the device is a capture device - amixer -D $MIXER get $SCONTROL | - sed -n "s/ Capabilities:.*cvolume.*/Capture/p" -} - -volume() { - amixer -D $MIXER get $SCONTROL $(capability) -} - -format() { - perl_filter='if (/.*\[(\d+%)\] (\[(-?\d+.\d+dB)\] )?\[(on|off)\]/)' - perl_filter+='{CORE::say $4 eq "off" ? "MUTE" : "' - # If dB was selected, print that instead - perl_filter+=$([[ $STEP = *dB ]] && echo '$3' || echo '$1') - perl_filter+='"; exit}' - perl -ne "$perl_filter" -} - -#------------------------------------------------------------------------ - -case $BLOCK_BUTTON in - 1) ~/.bin/rofi_set_default_sink.sh ;; - 3) amixer -q -D $MIXER sset $SCONTROL $(capability) toggle ;; # right click, mute/unmute - 4) amixer -q -D $MIXER sset $SCONTROL $(capability) ${STEP}+ unmute ;; # scroll up, increase - 5) amixer -q -D $MIXER sset $SCONTROL $(capability) ${STEP}- unmute ;; # scroll down, decrease -esac - -volume | format diff --git a/.config/i3blocks/volume-pipewire b/.config/i3blocks/volume-pipewire deleted file mode 100755 index c518b25..0000000 --- a/.config/i3blocks/volume-pipewire +++ /dev/null @@ -1,171 +0,0 @@ -#!/bin/bash -# Displays the default device, volume, and mute status for i3blocks - -set -a - -AUDIO_HIGH_SYMBOL=${AUDIO_HIGH_SYMBOL:-' '} - -AUDIO_MED_THRESH=${AUDIO_MED_THRESH:-50} -AUDIO_MED_SYMBOL=${AUDIO_MED_SYMBOL:-' '} - -AUDIO_LOW_THRESH=${AUDIO_LOW_THRESH:-0} -AUDIO_LOW_SYMBOL=${AUDIO_LOW_SYMBOL:-' '} - -AUDIO_MUTED_SYMBOL=${AUDIO_MUTED_SYMBOL:-' '} - -AUDIO_DELTA=${AUDIO_DELTA:-1} - -DEFAULT_COLOR=${DEFAULT_COLOR:-"#ffffff"} -MUTED_COLOR=${MUTED_COLOR:-"#a0a0a0"} - -LONG_FORMAT=${LONG_FORMAT:-'${SYMB} ${VOL}% [${INDEX}:${NAME}]'} -SHORT_FORMAT=${SHORT_FORMAT:-'${SYMB} ${VOL}% [${INDEX}]'} -USE_ALSA_NAME=${USE_ALSA_NAME:-0} -USE_DESCRIPTION=${USE_DESCRIPTION:-0} - -SUBSCRIBE=${SUBSCRIBE:-0} - -MIXER=${MIXER:-""} -SCONTROL=${SCONTROL:-""} - -while getopts F:Sf:adH:M:L:X:T:t:C:c:i:m:s:h opt; do - case "$opt" in - S) SUBSCRIBE=1 ;; - F) LONG_FORMAT="$OPTARG" ;; - f) SHORT_FORMAT="$OPTARG" ;; - a) USE_ALSA_NAME=1 ;; - d) USE_DESCRIPTION=1 ;; - H) AUDIO_HIGH_SYMBOL="$OPTARG" ;; - M) AUDIO_MED_SYMBOL="$OPTARG" ;; - L) AUDIO_LOW_SYMBOL="$OPTARG" ;; - X) AUDIO_MUTED_SYMBOL="$OPTARG" ;; - T) AUDIO_MED_THRESH="$OPTARG" ;; - t) AUDIO_LOW_THRESH="$OPTARG" ;; - C) DEFAULT_COLOR="$OPTARG" ;; - c) MUTED_COLOR="$OPTARG" ;; - i) AUDIO_INTERVAL="$OPTARG" ;; - m) MIXER="$OPTARG" ;; - s) SCONTROL="$OPTARG" ;; - h) printf \ -"Usage: volume-pulseaudio [-S] [-F format] [-f format] [-p] [-a|-d] [-H symb] [-M symb] - [-L symb] [-X symb] [-T thresh] [-t thresh] [-C color] [-c color] [-i inter] - [-m mixer] [-s scontrol] [-h] -Options: --F, -f\tOutput format (-F long format, -f short format) to use, with exposed variables: -\${SYMB}, \${VOL}, \${INDEX}, \${NAME} --S\tSubscribe to volume events (requires persistent block, always uses long format) --a\tUse ALSA name if possible --d\tUse device description instead of name if possible --H\tSymbol to use when audio level is high. Default: '$AUDIO_HIGH_SYMBOL' --M\tSymbol to use when audio level is medium. Default: '$AUDIO_MED_SYMBOL' --L\tSymbol to use when audio level is low. Default: '$AUDIO_LOW_SYMBOL' --X\tSymbol to use when audio is muted. Default: '$AUDIO_MUTED_SYMBOL' --T\tThreshold for medium audio level. Default: $AUDIO_MED_THRESH --t\tThreshold for low audio level. Default: $AUDIO_LOW_THRESH --C\tColor for non-muted audio. Default: $DEFAULT_COLOR --c\tColor for muted audio. Default: $MUTED_COLOR --i\tInterval size of volume increase/decrease. Default: $AUDIO_DELTA --m\tUse the given mixer. --s\tUse the given scontrol. --h\tShow this help text -" && exit 0;; - esac -done - -if [[ -z "$MIXER" ]] ; then - MIXER="default" - if amixer -D pulse info >/dev/null 2>&1 ; then - MIXER="pulse" - fi -fi - -if [[ -z "$SCONTROL" ]] ; then - SCONTROL=$(amixer -D "$MIXER" scontrols | sed -n "s/Simple mixer control '\([^']*\)',0/\1/p" | head -n1) -fi - -CAPABILITY=$(amixer -D $MIXER get $SCONTROL | sed -n "s/ Capabilities:.*cvolume.*/Capture/p") - - -function move_sinks_to_new_default { - DEFAULT_SINK=$1 - pactl list sink-inputs | grep index: | grep -o '[0-9]\+' | while read SINK - do - pactl move-sink-input $SINK $DEFAULT_SINK - done -} - -function set_default_playback_device_next { - inc=${1:-1} - num_devices=$(pactl list sinks | grep -c 'Sink #') - sink_arr=($(pactl list sinks | grep 'Sink #' | grep -o '[0-9]\+')) - default_sink_index=$(( $(pactl list sinks | grep 'Sink #' | grep -no '*' | grep -o '^[0-9]\+') - 1 )) - default_sink_index=$(( ($default_sink_index + $num_devices + $inc) % $num_devices )) - default_sink=${sink_arr[$default_sink_index]} - pactl set-default-sink $default_sink - move_sinks_to_new_default $default_sink -} - -case "$BLOCK_BUTTON" in - 1) ~/.bin/pipewire-sink.sh ;; - 2) amixer -q -D $MIXER sset $SCONTROL $CAPABILITY toggle ;; - 3) set_default_playback_device_next -1 ;; - 4) amixer -q -D $MIXER sset $SCONTROL $CAPABILITY $AUDIO_DELTA%+ ;; - 5) amixer -q -D $MIXER sset $SCONTROL $CAPABILITY $AUDIO_DELTA%- ;; -esac - -function print_format { - echo "$1" | envsubst '${SYMB}${VOL}${INDEX}${NAME}' -} - -function print_block { - ACTIVE=$(pactl list sinks | grep "State: RUNNING" -B4 -A55 | grep "Name:\|Volume: \(front-left\|mono\)\|Mute:\|api.alsa.pcm.card = \|node.nick = ") - for Name in NAME MUTED VOL INDEX NICK; do - read $Name - done < <(echo "$ACTIVE") - INDEX=$(echo "$INDEX" | grep -o '".*"' | sed 's/"//g') - VOL=$(echo "$VOL" | grep -o "[0-9]*%" | head -1 ) - VOL="${VOL%?}" - NAME=$(echo "$NICK" | grep -o '".*"' | sed 's/"//g') - - if [[ $USE_ALSA_NAME == 1 ]] ; then - ALSA_NAME=$(pactl list sinks |\ -awk '/^\s*\*/{f=1}/^\s*index:/{f=0}f' |\ -grep "alsa.name\|alsa.mixer_name" |\ -head -n1 |\ -sed 's/.*= "\(.*\)".*/\1/') - NAME=${ALSA_NAME:-$NAME} - elif [[ $USE_DESCRIPTION == 1 ]] ; then - DESCRIPTION=$(pactl list sinks | grep "State: RUNNING" -B4 -A55 | grep 'Description: ' | sed 's/^.*: //') - NAME=${DESCRIPTION:-$NAME} - fi - - if [[ $MUTED =~ "no" ]] ; then - SYMB=$AUDIO_HIGH_SYMBOL - [[ $VOL -le $AUDIO_MED_THRESH ]] && SYMB=$AUDIO_MED_SYMBOL - [[ $VOL -le $AUDIO_LOW_THRESH ]] && SYMB=$AUDIO_LOW_SYMBOL - COLOR=$DEFAULT_COLOR - else - SYMB=$AUDIO_MUTED_SYMBOL - COLOR=$MUTED_COLOR - fi - - if [[ $ACTIVE = "" ]] ; then - echo "Sound inactive" - COLOR='#222225' - fi - - if [[ $SUBSCRIBE == 1 ]] ; then - print_format "$LONG_FORMAT" - else - print_format "$LONG_FORMAT" - print_format "$SHORT_FORMAT" - echo "$COLOR" - fi -} - -print_block -if [[ $SUBSCRIBE == 1 ]] ; then - while read -r EVENT; do - print_block - done < <(pactl subscribe | stdbuf -oL grep change) -fi diff --git a/.config/i3blocks/volume-pulseaudio b/.config/i3blocks/volume-pulseaudio deleted file mode 100755 index fa32ded..0000000 --- a/.config/i3blocks/volume-pulseaudio +++ /dev/null @@ -1,180 +0,0 @@ -#!/usr/bin/env bash -# Displays the default device, volume, and mute status for i3blocks - -set -a - -AUDIO_HIGH_SYMBOL=${AUDIO_HIGH_SYMBOL:-' '} - -AUDIO_MED_THRESH=${AUDIO_MED_THRESH:-50} -AUDIO_MED_SYMBOL=${AUDIO_MED_SYMBOL:-' '} - -AUDIO_LOW_THRESH=${AUDIO_LOW_THRESH:-0} -AUDIO_LOW_SYMBOL=${AUDIO_LOW_SYMBOL:-' '} - -AUDIO_MUTED_SYMBOL=${AUDIO_MUTED_SYMBOL:-' '} - -AUDIO_DELTA=${AUDIO_DELTA:-5} - -DEFAULT_COLOR=${DEFAULT_COLOR:-"#ffffff"} -MUTED_COLOR=${MUTED_COLOR:-"#a0a0a0"} - -LONG_FORMAT=${LONG_FORMAT:-'${SYMB} ${VOL}% [${INDEX}:${NAME}]'} -SHORT_FORMAT=${SHORT_FORMAT:-'${SYMB} ${VOL}% [${INDEX}]'} -USE_ALSA_NAME=${USE_ALSA_NAME:-0} -USE_DESCRIPTION=${USE_DESCRIPTION:-0} - -SUBSCRIBE=${SUBSCRIBE:-0} - -MIXER=${MIXER:-""} -SCONTROL=${SCONTROL:-""} - -while getopts F:Sf:adH:M:L:X:T:t:C:c:i:m:s:h opt; do - case "$opt" in - S) SUBSCRIBE=1 ;; - F) LONG_FORMAT="$OPTARG" ;; - f) SHORT_FORMAT="$OPTARG" ;; - a) USE_ALSA_NAME=1 ;; - d) USE_DESCRIPTION=1 ;; - H) AUDIO_HIGH_SYMBOL="$OPTARG" ;; - M) AUDIO_MED_SYMBOL="$OPTARG" ;; - L) AUDIO_LOW_SYMBOL="$OPTARG" ;; - X) AUDIO_MUTED_SYMBOL="$OPTARG" ;; - T) AUDIO_MED_THRESH="$OPTARG" ;; - t) AUDIO_LOW_THRESH="$OPTARG" ;; - C) DEFAULT_COLOR="$OPTARG" ;; - c) MUTED_COLOR="$OPTARG" ;; - i) AUDIO_DELTA="$OPTARG" ;; - m) MIXER="$OPTARG" ;; - s) SCONTROL="$OPTARG" ;; - h) printf \ -"Usage: volume-pulseaudio [-S] [-F format] [-f format] [-p] [-a|-d] [-H symb] [-M symb] - [-L symb] [-X symb] [-T thresh] [-t thresh] [-C color] [-c color] [-i inter] - [-m mixer] [-s scontrol] [-j] [-h] -Options: --F, -f\tOutput format (-F long format, -f short format) to use, with exposed variables: -\${SYMB}, \${VOL}, \${INDEX}, \${NAME} --S\tSubscribe to volume events (requires persistent block, always uses long format) --a\tUse ALSA name if possible --d\tUse device description instead of name if possible --H\tSymbol to use when audio level is high. Default: '$AUDIO_HIGH_SYMBOL' --M\tSymbol to use when audio level is medium. Default: '$AUDIO_MED_SYMBOL' --L\tSymbol to use when audio level is low. Default: '$AUDIO_LOW_SYMBOL' --X\tSymbol to use when audio is muted. Default: '$AUDIO_MUTED_SYMBOL' --T\tThreshold for medium audio level. Default: $AUDIO_MED_THRESH --t\tThreshold for low audio level. Default: $AUDIO_LOW_THRESH --C\tColor for non-muted audio. Default: $DEFAULT_COLOR --c\tColor for muted audio. Default: $MUTED_COLOR --i\tInterval size of volume increase/decrease. Default: $AUDIO_DELTA --m\tUse the given mixer. --s\tUse the given scontrol. --h\tShow this help text -" && exit 0;; - esac -done - -if [[ -z "$MIXER" ]] ; then - MIXER="default" - if amixer -D pulse info >/dev/null 2>&1 ; then - MIXER="pulse" - fi -fi - -if [[ -z "$SCONTROL" ]] ; then - SCONTROL=$(amixer -D "$MIXER" scontrols | sed -n "s/Simple mixer control '\([^']*\)',0/\1/p" | head -n1) -fi - -CAPABILITY=$(amixer -D $MIXER get $SCONTROL | sed -n "s/ Capabilities:.*cvolume.*/Capture/p") - - -function move_sinks_to_new_default { - DEFAULT_SINK=$1 - pacmd list-sink-inputs | grep index: | grep -o '[0-9]\+' | while read SINK - do - pacmd move-sink-input $SINK $DEFAULT_SINK - done -} - -function set_default_playback_device_next { - inc=${1:-1} - num_devices=$(pacmd list-sinks | grep -c index:) - sink_arr=($(pacmd list-sinks | grep index: | grep -o '[0-9]\+')) - default_sink_index=$(( $(pacmd list-sinks | grep index: | grep -no '*' | grep -o '^[0-9]\+') - 1 )) - default_sink_index=$(( ($default_sink_index + $num_devices + $inc) % $num_devices )) - default_sink=${sink_arr[$default_sink_index]} - pacmd set-default-sink $default_sink - move_sinks_to_new_default $default_sink -} - -case "$BLOCK_BUTTON" in - 1) set_default_playback_device_next ;; - 2) amixer -q -D $MIXER sset $SCONTROL $CAPABILITY toggle ;; - 3) set_default_playback_device_next -1 ;; - 4) amixer -q -D $MIXER sset $SCONTROL $CAPABILITY $AUDIO_DELTA%+ ;; - 5) amixer -q -D $MIXER sset $SCONTROL $CAPABILITY $AUDIO_DELTA%- ;; -esac - - -function print_format { - if [[ $markup == "pango" ]] ; then - output="$1" - else - output=$1 - fi - - echo "$output" | envsubst '${SYMB}${VOL}${INDEX}${NAME}' -} - -function print_block { - ACTIVE=$(pacmd list-sinks | grep "state: RUNNING" -B4 -A7 | grep "index:\|name:\|volume: \(front\|mono\)\|muted:") - [ -z "$ACTIVE" ] && ACTIVE=$(pacmd list-sinks | grep "index:\|name:\|volume: \(front\|mono\)\|muted:" | grep -A3 '*') - for name in INDEX NAME VOL MUTED; do - read $name - done < <(echo "$ACTIVE") - INDEX=$(echo "$INDEX" | grep -o '[0-9]\+') - VOL=$(echo "$VOL" | grep -o "[0-9]*%" | head -1 ) - VOL="${VOL%?}" - - NAME=$(echo "$NAME" | sed \ -'s/.*<.*\.\(.*\)>.*/\1/; t;'\ -'s/.*<\(.*\)>.*/\1/; t;'\ -'s/.*/unknown/') - - if [[ $USE_ALSA_NAME == 1 ]] ; then - ALSA_NAME=$(pacmd list-sinks |\ -awk '/^\s*\*/{f=1}/^\s*index:/{f=0}f' |\ -grep "alsa.name\|alsa.mixer_name" |\ -head -n1 |\ -sed 's/.*= "\(.*\)".*/\1/') - NAME=${ALSA_NAME:-$NAME} - elif [[ $USE_DESCRIPTION == 1 ]] ; then - DESCRIPTION=$(pacmd list-sinks |\ -awk '/^\s*\*/{f=1}/^\s*index:/{f=0}f' |\ -grep "device.description" |\ -head -n1 |\ -sed 's/.*= "\(.*\)".*/\1/') - NAME=${DESCRIPTION:-$NAME} - fi - - if [[ $MUTED =~ "no" ]] ; then - SYMB=$AUDIO_HIGH_SYMBOL - [[ $VOL -le $AUDIO_MED_THRESH ]] && SYMB=$AUDIO_MED_SYMBOL - [[ $VOL -le $AUDIO_LOW_THRESH ]] && SYMB=$AUDIO_LOW_SYMBOL - COLOR=$DEFAULT_COLOR - else - SYMB=$AUDIO_MUTED_SYMBOL - COLOR=$MUTED_COLOR - fi - - print_format "$LONG_FORMAT" $COLOR - if [[ $SUBSCRIBE != 1 ]] ; then - print_format "$SHORT_FORMAT" $COLOR - echo $COLOR - fi -} - -print_block -if [[ $SUBSCRIBE == 1 ]] ; then - while read -r EVENT; do - print_block - done < <(pactl subscribe | stdbuf -oL grep change) -fi