fix: Shellcheck (#509)

* fix: Device detection

src/entry.sh

@@ -24,10 +24,30 @@ if [[ "$CONSOLE" == [Yy]* ]]; then
 fi
 
 [[ "$DEBUG" == [Yy1]* ]] && info "$VERS" && set -x
-qemu-system-x86_64 -daemonize -pidfile "$QEMU_PID" ${ARGS:+ $ARGS}
-
+msg=$(qemu-system-x86_64 -daemonize -pidfile "$QEMU_PID" ${ARGS:+ $ARGS})
 { set +x; } 2>/dev/null
-cat /dev/pts/1 2>/dev/null & wait $! || true
+
+if [[ "$msg" != "char"* ||  "$msg" != *"serial0)" ]]; then
+  echo "$msg"
+fi
+
+dev="${msg#*/dev/p}"
+dev="/dev/p${dev%% *}"
+
+if [ ! -c "$dev" ]; then
+  dev=$(echo 'info chardev' | nc -q 1 -w 1 localhost "$QEMU_PORT" | tr -d '\000')
+  dev="${dev#*charserial0}"
+  dev="${dev#*pty:}"
+  dev="${dev%%$'\n'*}"
+  dev="${dev%%$'\r'*}"
+fi
+
+if [ ! -c "$dev" ]; then
+  error "Device '$dev' not found!"
+  finish 34
+fi
+
+cat "$dev" 2>/dev/null & wait $! || true
 
 sleep 1
 finish 0

src/power.sh

@@ -35,7 +35,7 @@ finish() {
   if [ -f "$QEMU_PID" ]; then
 
     pid="$(cat "$QEMU_PID")"
-    echo && error "Forcefully quitting QEMU process, reason: $reason..."
+    echo && error "Forcefully terminating QEMU process, reason: $reason..."
     { kill -15 "$pid" || true; } 2>/dev/null
 
     while isAlive "$pid"; do
@@ -51,7 +51,7 @@ finish() {
   closeNetwork
 
   sleep 1
-  echo && info "Shutdown completed!"
+  echo && echo "❯ Shutdown completed!"
 
   exit "$reason"
 }
@@ -61,10 +61,14 @@ _graceful_shutdown() {
   local code=$?
   local pid cnt response
 
-  [ -f "$QEMU_COUNT" ] && return
-  echo 0 > "$QEMU_COUNT"
-
   set +e
+
+  if [ -f "$QEMU_COUNT" ]; then
+    echo && info "Ignored $1 signal, already shutting down..."
+    return
+  fi
+
+  echo 0 > "$QEMU_COUNT"
   echo && info "Received $1 signal, sending shutdown command..."
 
   if [ ! -f "$QEMU_PID" ]; then
@@ -94,7 +98,7 @@ _graceful_shutdown() {
 
     response="${response#*message\"\: \"}"
     [ -z "$response" ] && response="second signal"
-    echo && error "Forcefully quitting because of: ${response%%\"*}"
+    echo && error "Forcefully terminating because of: ${response%%\"*}"
     { kill -15 "$pid" || true; } 2>/dev/null
 
   fi