Raspberry Pi和Python 2.7-尝试打印给所有用户
[英]Raspberry Pi & Python 2.7 - trying to print to all users
问题描述
I have a program that runs when the Pi is booted. 
我有一个程序在树莓派启动时运行。
The print statements are not displaying on additional terminal sessions. 打印语句未显示在其他终端会话上。
I can only get the print statements when I kill the auto-booted process and restart the program. 我只有在终止自动启动的进程并重新启动程序后才能获得打印语句。
Is there a method to broadcast print messages to all users - like the message displayed then typing 'Halt'? 有没有一种方法可以向所有用户广播打印消息，例如显示的消息然后键入“ Halt”？
Thx 谢谢
1 个解决方案
解决方案1
2 2015-10-31 12:28:03
You are looking for the wall BSD function. 您正在寻找wall BSD功能。
NAME wall -- write a message to users
SYNOPSIS wall [-g group] [file]
DESCRIPTION The wall utility displays the contents of file or, by default, its standard input, on the terminals of all currently logged in users.
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