使用 systemd 时，回显消息未出现在终端上

Question

我有 systemd 服务，比如 xyzWarmup.service。

这是服务文件

[Unit]
Description=Xyz agent.
After=fooAfter.service
Before=fooBefore1.service
Before=fooBefore2.service

[Service]
# During boot the xyz.sh script reads input from /dev/console.  If the user
# hits <ESC>, it will skip waiting for xyz and abc to startup.
Type=oneshot
StandardInput=tty
StandardOutput=tty
ExecStart=/usr/bin/xyz.sh start

RemainAfterExit=True
ExecStop=/usr/bin/xyz.sh stop

[Install]
WantedBy=multi-user.target

以下是xyz.sh的部分。

#! /bin/bash                                                                                                                                                                                               
#                                                              
### BEGIN INIT INFO                                                                                                                                                                                         
# Required-Stop: Post                                                                                                                                                                                       
### END INIT INFO                                                                                                                                                                                           

XYZ=/usr/bin/Xyz
prog="Xyz"
lockfile=/var/lock/subsys/$prog
msg="Completing initialization"

start() {
     # Run wfw in background                                                                                                                                                                                 
    ulimit -c 0
    # wfw has a default timeout of 10 minutes - just pick a large value                                                                                                                                     
    wfw -t 3600 xyz abc >/dev/null 2>&1 &
    PID=$!

    # Display the message here after spawning wfw so Esc can work                                                                                                                                           
    echo -n $"$msg (press ESC to skip): " > /dev/console

    while [ 1 ]; do
        read -s -r -d "" -N 1 -t 0.2 CHAR || true
        if [ "$CHAR" = $'\x1B' ]; then
            kill -9 $PID 2>/dev/null
            # fall through to wait for process to exit                                                                                                                                                      
        fi

        STATE="`ps -p $PID -o state=`"
        if [ "$STATE" = ""  ]; then 
            # has exited                                                                                                                                                                                    
            wait $PID 2>/dev/null
            if [ $? -eq 0 ]; then
                echo "[ OK ]" 
                echo
                exit 0
            else
                echo "[ FAILED ]"
                echo "This is failure"  
                               exit 1
            fi
        fi
    done
}

在代码“if [ "$STATE" = "" ];”中的这一行之后，我看不到任何回显消息。当此脚本在启动期间运行时，我只看到来自脚本的以下消息

 Completing initialization (press ESC to skip): 

我在屏幕上没有看到“[ OK ]”或“[ FAILED ]”。

当我在 Fedora14 中将此脚本用作 initscript 时，我曾经看到过这些消息。有一次，我转向了 systemd。我开始看到这个问题。

systemd 版本为：systemd-201-2.fc18.9.i686 和 systemd.default_standard_output=tty

请帮忙。