bash 在控制台上显示 init.d 脚本回显
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showing init.d script echo on console
提问by E_P
I have a bash script within /etc/init.d in a kali2016.1 box that executes some actions. My issue is the following: when executing the script as ./script{start|stop|restart|}, the output of echo shows on the console. When I run it as service script{start|stop|restart|*}, however, it logs the echo output in /var/log/daemon.log instead. How can I change this behavior so that, when executing it as service, it continues to log but also shows the echo output on console? Covering the basics, it goes as follows:
我在执行某些操作的 kali2016.1 框中的 /etc/init.d 中有一个 bash 脚本。我的问题如下：当以./script{start|stop|restart|}执行脚本时，echo 的输出显示在控制台上。但是，当我以service script{start|stop|restart|*}运行它时，它会在 /var/log/daemon.log 中记录 echo 输出。如何更改此行为，以便在将其作为服务执行时，它会继续记录并在控制台上显示 echo 输出？涵盖基础知识，如下所示：
#!/bin/bash
case "" in
start)
echo "start"
;;
stop)
echo "stop"
;;
restart)
echo "restart"
;;
*)
echo "usage {start|stop|restart}"
exit 1
;;
esac
exit 0
回答by dancancode
You can echo "foo" > /dev/console.
你可以echo "foo" > /dev/console。
When stdoutis connected to your terminal you see the output. Based on your description, the servicecommand is redirecting/capturing stdoutand sending it to syslog.
当stdout连接到您的终端时，您会看到输出。根据您的描述，该service命令正在重定向/捕获stdout并将其发送到系统日志。
Have a look at service- it's probably a shell script, so you can see what's happening.
看看service- 它可能是一个 shell 脚本，所以你可以看到发生了什么。
FWIW, on most distributions, including CentOS7 and AWS Linux, the servicescript does not change stdout.
FWIW，在大多数发行版上，包括 CentOS7 和 AWS Linux，service脚本不会改变stdout。
