Adjust install script to create dirs before realpath.

deb/source/format

@@ -1 +1 @@
-3.0 (quilt)
+1.0

install.sh

@@ -62,4 +62,4 @@ ROOT=$ROOT /bin/sh ./scripts/install_systemd_service.sh || exit $?
 ROOT=$ROOT /bin/sh ./scripts/add_myself_to_dialout.sh || exit $?
 
 echo
-echo "wmbusmetters sucessfully installed."
+echo "wmbusmeters sucessfully installed."

scripts/install_binaries.sh

@@ -1,17 +1,26 @@
 # Copyright (C) 2021-2023 Fredrik Öhrström (gpl-3.0-or-later)
 
-wmbusmeters_dir="$ROOT"/usr/bin
-wmbusmeters_path="$wmbusmeters_dir"/wmbusmeters
-wmbusmetersd_dir="$ROOT"/usr/sbin
-wmbusmetersd_path="$wmbusmetersd_dir"/wmbusmetersd
-wmbusmetersd_target=$(realpath -s --relative-to="$wmbusmetersd_dir" "$wmbusmeters_path")
+# Command binary /usr/bin/wmbusmeters
+wmbusmeters_dir="${ROOT}/usr/bin"
+wmbusmeters_path="${wmbusmeters_dir}/wmbusmeters"
 
-rm -f "$wmbusmeters_path" "$wmbusmetersd_path" || exit $?⏎
+# Daemon /usr/sbin/wmbusmetersd which is a symlink to the command binary.
+wmbusmetersd_dir="${ROOT}/usr/sbin"
+wmbusmetersd_path="${wmbusmetersd_dir}/wmbusmetersd"
 
-install -D -m 755 "$SRC" "$wmbusmeters_path" || exit $?⏎
+# Remove any existing installed components.
+rm -f "$wmbusmeters_path" "$wmbusmetersd_path" || exit $?
 
+# Install the command binary and create the bin directory if necessary.
+install -D -m 755 "$SRC" "$wmbusmeters_path" || exit $?
+
+# Create the sbin directory if necessary.
 mkdir -p "$wmbusmetersd_dir" || exit $?
 
+# Calculate the relative symlink from sbin to bin.
+wmbusmetersd_target="$(realpath -s --relative-to="${wmbusmetersd_dir}" "${wmbusmeters_path}")"
+
+# Create the actual link.
 ln -s "$wmbusmetersd_target" "$wmbusmetersd_path" || exit $?
 
-echo "binaries: installed '$wmbusmeters_path' '$wmbusmetersd_path'"
+echo "binaries: installed ${wmbusmeters_path} ${wmbusmetersd_path}"