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杀死Bash脚本中的所有无声进程(Kill All Silent Processes in Bash Script)

 我在脚本中运行了一系列phantomjs的静默实例，当脚本结束时我想立刻杀掉它们。 但是要使脚本看起来不错，并且不要使用此消息使屏幕过载  
./runTests.sh: line 74: 26002 Killed phantomjs Lib/loadtester/runTests.js $TEST_COUNT $CLIENT_LIMIT $ACTION $PROFILE $TEST_SERVER $TEST_INCREMENT $DEBUG_MODE > "/tmp/"$TEST_COUNT"_log.txt"
 
 最好的方法是什么，我目前正在尝试：  
(killall -9 phantomjs 2>&1) >/dev/null
 
 我已经尝试了几乎所有我能想到的东西，包括killall中所有安静的选项 

I run a series of silent instances of phantomjs in a script, when the script ends I want to kill them off, all at once. However to make the script look nice and not overload the screens with this message 
./runTests.sh: line 74: 26002 Killed phantomjs Lib/loadtester/runTests.js $TEST_COUNT $CLIENT_LIMIT $ACTION $PROFILE $TEST_SERVER $TEST_INCREMENT $DEBUG_MODE > "/tmp/"$TEST_COUNT"_log.txt"
 
What is the best way to do so, I was currently trying: 
(killall -9 phantomjs 2>&1) >/dev/null
 
And have tried pretty much everything I can think of including all quiet options in killall

原文：

更新时间：2022-05-11 11:05

最满意答案

 你显示的代码工作得很好。 你绝对没有得到那条特定线路的错误信息。 错误是由其他地方引起的。  
 是的， %w创建一个字符串数组。 像你一样使用[]来创建正常的数组。  
 现在编辑您已经显示了真实的代码：  
 @config在您使用它的范围内nil ，所以当您执行@config[:strong_enabled]时会发生异常。  
 请注意，在类定义的内部，但在任何方法定义之外， @foo引用类对象的实例变量，而不是任何特定实例的实例变量（因为它引用了哪一个？还没有任何实例，当常量初始化）。 

The code you showed works just fine. You're definitely not getting that error message for that particular line. The error is caused elsewhere. 
And yes, %w creates an array of strings. To create normal arrays use [] like you did. 
Edit now that you've shown the real code: 
@config is nil in the scope where you use it, so you get an exception when you do @config[:strong_enabled]. 
Note that inside of a class definition but outside of any method definition @foo refers to the instance variable of the class object, not that of any particular instance (because which one would it refer to? There aren't even any instances yet, when the constant is initialized).

杀死Bash脚本中的所有无声进程(Kill All Silent Processes in Bash Script)

最满意答案

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