initial commit

Makefile

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+install:
+	mkdir -p $(HOME)/.local/bin/
+	cp obt.sh $(HOME)/.local/bin/obt
+	chmod 744 $(HOME)/.local/bin/obt

README.md

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+# My Bluetooth helper program
+
+It just autoconnects to a pre-selected device and allows to disconnect or connect again.
+
+Address to be used is defined in ~/.config/obt.conf.

obt.sh

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+#!/bin/bash
+
+CFG="$HOME/.config/obt.conf"
+
+# ensure config file exists
+mkdir -p "$(dirname "$CFG")"
+[[ -e $CFG ]] || touch "$CFG"
+
+read -r ADDR < "$CFG"
+
+init() {
+    # save address if not set and argument is not a command
+    if [[ -z $ADDR && $1 != c && $1 != d ]]; then
+        ADDR=$1
+        echo "$ADDR" > "$CFG"
+    fi
+
+    echo "trusting..."
+    bluetoothctl trust "$ADDR"
+    echo "pairing..."
+    bluetoothctl pair "$ADDR"
+    echo "done!"
+}
+
+connect() {
+    bluetoothctl connect "$ADDR"
+}
+
+disconnect() {
+    bluetoothctl disconnect "$ADDR"
+}
+
+usage() {
+    echo "usage:"
+    echo "  $0 <BT_ADDRESS>   # pair + trust + save"
+    echo "  $0 c              # connect"
+    echo "  $0 d              # disconnect"
+    exit 1
+}
+
+[[ $# -eq 0 ]] && usage
+
+case "$1" in
+    c)
+        [[ -z $ADDR ]] && echo "no saved address" && exit 1
+        connect
+        ;;
+    d)
+        [[ -z $ADDR ]] && echo "no saved address" && exit 1
+        disconnect
+        ;;
+    *)
+        init "$1"
+        ;;
+esac