我希望 xinetd 在某个端口收到连接时执行 shell 脚本。为此，请遵循本教程：[在此处输入链接描述][1]
不幸的是，整个事情都不起作用，因为我希望这就是我要向您展示我的配置的原因。
xinetd 调用的脚本位于/usr/local/bin。它可以毫无问题地执行：
#!/bin/bash
echo "connection received"
/etc/xinetd.d/testservice 有这个内容：
service testservice
{
disable = no
socket_type = stream
protocol = tcp
port = 5900
log_on_success += USERID
log_on_failure += USERID
server = /usr/local/bin/testservice
user = root
instances = UNLIMITED
wait = no
log_type = SYSLOG daemon debug
}
在 /etc/services 我添加了这一行：
testservice 5900/tcp
然后我重新启动了xinetdservice xinetd restart
最后，我尝试连接到客户端：
nc host1 5900
有人可以告诉我这里出了什么问题吗？
以下是 /var/log/syslog.1 中的一些行：
Nov 22 10:07:33 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/chargen [file=/etc/xinetd.conf] [line=17]
Nov 22 10:07:33 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/daytime [file=/etc/xinetd.d/daytime] [line=28]
Nov 22 10:07:33 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/discard [file=/etc/xinetd.d/discard] [line=26]
Nov 22 10:07:33 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/echo [file=/etc/xinetd.d/echo] [line=25]
Nov 22 10:07:33 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/exec [file=/etc/xinetd.d/exec] [line=26]
Nov 22 10:07:34 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/login [file=/etc/xinetd.d/login] [line=8]
Nov 22 10:07:34 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/rexec [file=/etc/xinetd.d/rexec] [line=13]
Nov 22 10:07:34 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/rexecd [file=/etc/xinetd.d/rexecd] [line=0]
Nov 22 10:07:34 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/rlogin [file=/etc/xinetd.d/rlogin] [line=10]
Nov 22 10:07:34 ubuntu1 acpid: 33 rules loaded
Nov 22 10:07:34 ubuntu1 acpid: waiting for events: event logging is off
Nov 22 10:07:34 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/rsh [file=/etc/xinetd.d/rsh] [line=10]
Nov 22 10:07:34 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/shell [file=/etc/xinetd.d/shell] [line=11]
Nov 22 10:07:34 ubuntu1 xinetd[886]: Reading included configuration file: /etc/xinetd.d/time [file=/etc/xinetd.d/time] [line=11]
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing chargen
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing chargen
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing daytime
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing daytime
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing discard
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing discard
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing echo
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing echo
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing time
Nov 22 10:07:34 ubuntu1 xinetd[886]: removing time
Nov 22 10:07:34 ubuntu1 xinetd[886]: bind failed (Address already in use (errno = 98)). service = exec
Nov 22 10:07:34 ubuntu1 xinetd[886]: Service exec failed to start and is deactivated.
Nov 22 10:07:34 ubuntu1 xinetd[886]: bind failed (Address already in use (errno = 98)). service = login
Nov 22 10:07:34 ubuntu1 xinetd[886]: Service login failed to start and is deactivated.
Nov 22 10:07:34 ubuntu1 xinetd[886]: bind failed (Address already in use (errno = 98)). service = shell
Nov 22 10:07:34 ubuntu1 xinetd[886]: Service shell failed to start and is deactivated.
Nov 22 10:07:34 ubuntu1 xinetd[886]: xinetd Version 2.3.14 started with libwrap loadavg options compiled in.
Nov 22 10:07:34 ubuntu1 xinetd[886]: Started working: 3 available services
其他服务似乎在运行：
网络统计-an | egrep 'Proto|LISTEN'
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:512 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:513 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:514 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp6 0 0 ::1:631 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
Proto RefCnt Flags Type State I-Node Path
unix 2 [ ACC ] STREAM LISTENING 10248 /run/user/user1/keyring-0bvpKQ/control
unix 2 [ ACC ] STREAM LISTENING 10250 /run/user/user1/keyring-0bvpKQ/ssh
unix 2 [ ACC ] STREAM LISTENING 8087 /tmp/.X11-unix/X0
unix 2 [ ACC ] STREAM LISTENING 10038 @/tmp/dbus-3MCEY0sgqz
unix 2 [ ACC ] STREAM LISTENING 689 @/com/ubuntu/upstart
unix 2 [ ACC ] STREAM LISTENING 7758 /var/run/cups/cups.sock
unix 2 [ ACC ] STREAM LISTENING 986 @/org/bluez/audio
unix 2 [ ACC ] STREAM LISTENING 10192 /tmp/.pcmanfm-socket--0-user1
unix 2 [ ACC ] STREAM LISTENING 8086 @/tmp/.X11-unix/X0
unix 2 [ ACC ] SEQPACKET LISTENING 882 /run/udev/control
unix 2 [ ACC ] STREAM LISTENING 913 /var/run/dbus/system_bus_socket
unix 2 [ ACC ] STREAM LISTENING 10028 /tmp/ssh-1PFvKafVKThh/agent.1507
unix 2 [ ACC ] STREAM LISTENING 34594 /tmp/.lxterminal-socket:0-user1
unix 2 [ ACC ] STREAM LISTENING 968 /var/run/avahi-daemon/socket
unix 2 [ ACC ] STREAM LISTENING 982 /var/run/sdp
unix 2 [ ACC ] STREAM LISTENING 10629 /tmp/.menu-cached-:0-user1
unix 2 [ ACC ] STREAM LISTENING 8433 /var/run/acpid.socket
也许这也有帮助：
service xinetd restart
stop: Rejected send message, 1 matched rules; type="method_call", sender=":1.73" (uid=1000 pid=5311 comm="stop xinetd ") interface="com.ubuntu.Upstart0_6.Job" member="Stop" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")
start: Rejected send message, 1 matched rules; type="method_call", sender=":1.74" (uid=1000 pid=5308 comm="start xinetd ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")