sped up menu display when controller unpowered
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191
bt
Executable file
191
bt
Executable file
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#!/bin/sh
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SCAN_PERIOD=5
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AUTOTRUST=false
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AUTOSCAN=true #immediately start scanning when started to speed up pairing process
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#locations of blacklist and hard coded list of paired devices (watch out, need to modify Makefile as well if you want to change these values and still use make install)
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BLACKLIST=${XDG_DATA_HOME:-$HOME/.local/share}/bt/blacklist
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PAIRLIST=${XDG_DATA_HOME:-$HOME/.local/share}/bt/paired
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actions="pair
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unpair"
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[ "$AUTOTRUST" = false ] && actions="${actions}
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trust"
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#Checks for necessary programs to be present. Very unlikely not to be present but let's just err on the safer side.
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for prog in dmenu bluetoothctl awk cat date nl; do
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if ! hash "$prog" 2>/dev/null; then
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printf 'bthandler: %s: command not found\n' "$prog" >&2
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exit 127
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fi
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done
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power(){
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powerstatus="$( bluetoothctl show | grep Powered | awk '{print $2}' )"
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[ "$powerstatus" = "no" ] && [ "$1" = on ] && bluetoothctl power on
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[ "$powerstatus" = "yes" ] && [ "$1" = off ] && bluetoothctl power off
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}
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scan(){
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scanstatus="$( bluetoothctl show | grep Discovering | awk '{print $2}' )"
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if [ "$1" = on ]; then
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#sets variable in case scanning was already on before the start of bt
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[ "$start_scan" = "" ] && start_scan="$( date +'%s' )"
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if [ "$scanstatus" = "no" ]; then
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bluetoothctl scan on &
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start_scan="$( date +'%s' )"
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fi
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elif [ "$1" = off ]; then
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if [ "$scanstatus" = "yes" ]; then
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bluetoothctl scan off
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fi
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fi
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}
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#Check bluetoothctl paired-devices for new devices to be hardcoded into pair list
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update_pair_list(){
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btctl_paired_devices="$(bluetoothctl paired-devices)"
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if [ -n "$btctl_paired_devices" ]
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then
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btctl_not_in_list="$( echo "$btctl_paired_devices" | grep -vf "$PAIRLIST")"
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[ -n "$btctl_not_in_list" ] && echo "$btctl_not_in_list" >> "$PAIRLIST"
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fi
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}
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#start scanning as early as possible to speed up pairing process
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#In function to more quickly display the menu
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startup(){
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if $AUTOSCAN
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then
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power on
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scan on
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fi
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}
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startup &
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update_pair_list &
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# shellcheck disable=SC1091
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if bluetoothctl devices | awk '{print "bluetoothctl info "$2}' | . /dev/stdin | grep -q "Connected: yes"
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then
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actions="$(printf "disconnect\n%s" "$actions")"
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fi
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#Compile list of all Bluetooth IDS of paired devices (from bluetoothctl and from hardcoded list)
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bt_IDS="$( ( bluetoothctl paired-devices && cat "$PAIRLIST" ) | sort -u | awk '{print $2}' )"
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#Compile list of all device Names of paired devices (from bluetoothctl and from hardcoded list)
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paired_devices="$( ( bluetoothctl paired-devices && cat "$PAIRLIST" ) | sort -u | awk '{for (i=3; i<NF; i++) printf $i " "; print $NF}' )"
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disp_devices="$( echo "$paired_devices" | grep -vf "$BLACKLIST" )"
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#detects current power mode of controller and adjusts options accordingly
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poweroption="$( echo "$powerstatus" | sed 's/yes/power off/; s/no/power on/' )"
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#Don't print empty device list, removes unnecessary empty choice in dmenu
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[ "$disp_devices" = "" ] && choice=$( printf "%s\n%s" "$actions" "$poweroption" | dmenu -i -p 'What BT action would you like to perform:' )
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[ "$disp_devices" != "" ] && choice=$( ( echo "$disp_devices" && printf "%s\n%s" "$actions" "$poweroption" ) | dmenu -i -p 'What BT action would you like to perform:' )
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cleanup(){
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scan off
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exit 0
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}
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pair(){
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#since this function can get called indefinitely, make sure to always be scanning and controller has power in the case that it got deactived by some other process.
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power on
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scan on
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#check whether $SCAN_PERIOD seconds has already passed since starting scanning, if not, wait for the rest of that time.
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if [ $((( "$(date +'%s')" - "$start_scan" ))) -lt $SCAN_PERIOD ]; then
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sleep_period="$((( "$SCAN_PERIOD" - "$( date +'%s')" + "$start_scan" )))"
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if [ "$sleep_period" -eq 1 ]; then
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notify-send "Bluetooth" "Searching for devices, please wait 1 second"
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else
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notify-send "Bluetooth" "Searching for devices, please wait $sleep_period seconds"
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fi
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sleep "$sleep_period"
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fi
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all_devices="$( bluetoothctl devices )"
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if [ "$paired_devices" = "" ]; then
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new_devices="$( echo "$all_devices" | awk '{for (i=3; i<NF; i++) printf $i " "; print $NF}' )"
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bt_IDS="$( echo "$all_devices" | awk '{print $2}' )"
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else
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echo "$paired_devices" > /tmp/paired_devices$$
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filtered_devices="$( echo "$all_devices" | grep -vf "/tmp/paired_devices$$")"
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bt_IDS="$( echo "$filtered_devices" | awk '{print $2}' )"
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new_devices="$( echo "$filtered_devices" | awk '{for (i=3; i<NF; i++) printf $i " "; print $NF}' )"
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rm /tmp/paired_devices$$
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fi
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[ "$new_devices" = "" ] && options="rescan" || options=$(echo "$new_devices" && echo 'rescan')
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choice=$( echo "$options" | dmenu -l 10 -i -p 'pair with which device?' )
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if [ -n "$choice" ]; then
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if [ "$choice" = "rescan" ]; then
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start_scan="$( date +'%s')"
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pair
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else
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dev_no=$( echo "$new_devices" | nl | grep "$choice" | awk '{print $1}')
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dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}' )
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#only attempt to connect if pairing succeeds
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bluetoothctl pair "$dev_id" && ( pair_succesful=true && bluetoothctl connect "$dev_id" ) || pair_succesful=false
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if $AUTOTRUST; then
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bluetoothctl trust "$dev_id"
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fi
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#if device is not already hard coded as paired, add to paired devices list
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if [ "$( grep "$dev_id" "$PAIRLIST")" = "" ] || [ "$(wc -l "$PAIRLIST")" -eq 0 ] && $pair_succesful
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then
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echo to be added to "$PAIRLIST":
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echo Device "$dev_id" "$choice"
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echo Device "$dev_id" "$choice" >> "$PAIRLIST"
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fi
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fi
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fi
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}
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case $choice in
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"power on") bluetoothctl power on;;
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"power off") bluetoothctl power off;;
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"scan on") bluetoothctl power on && echo power on && sleep 2
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([ -n "$TERMINAL" ] && $TERMINAL -e bluetoothctl scan on ) || st bluetoothctl scan on;;
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"pair") pair;;
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"unpair") choice=$( echo "$paired_devices" | dmenu -l 10 -i -p 'remove which paired device?')
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if [ -n "$choice" ]; then
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dev_no=$( echo "$paired_devices" | nl | grep -P "[0-9]+\t$choice$" | awk '{print $1}')
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dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}' )
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bluetoothctl remove "$dev_id"
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#remove device to unpair from hard coded paired devices list
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new_paired_list="$( grep -v "$dev_id" "$PAIRLIST" )"
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if [ "$new_paired_list" != "" ]
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then
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echo "$new_paired_list" > "$PAIRLIST"
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else
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rm -rf "$PAIRLIST"
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touch "$PAIRLIST"
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fi
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fi;;
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"trust") choice=$( echo "$paired_devices" | dmenu -l 10 -i -p 'remove which paired device?')
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if [ -n "$choice" ]; then
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dev_no=$( echo "$paired_devices" | nl | grep -P "[0-9]+\t$choice$" | awk '{print $1}')
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dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}' )
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bluetoothctl trust "$dev_id"
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fi;;
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"disconnect") choice=$( echo "$paired_devices" | dmenu -l 10 -i -p 'remove which paired device?')
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if [ -n "$choice" ]; then
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dev_no=$( echo "$paired_devices" | nl | grep -P "[0-9]+\t$choice$" | awk '{print $1}')
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dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}' )
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bluetoothctl disconnect "$dev_id"
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fi;;
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"blacklist")
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choice=$( echo "$paired_devices" | dmenu -l 10 -i -p 'blacklist which paired device from selection?')
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if [ -n "$choice" ]; then
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echo "$choice" >> "$BLACKLIST"
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fi;;
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*)
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echo "$choice"
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dev_no=$( echo "$paired_devices" | nl | grep -P "[0-9]+\t$choice$" | awk '{print $1}')
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[ "$dev_no" != "" ] && dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}')
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if [ -n "$dev_id" ]; then
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power on
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bluetoothctl pair "$dev_id"
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bluetoothctl connect "$dev_id"
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fi;;
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esac
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