Question

我有以下命令：

cnee -replay -f $filename.xns -sk q -ns

我想在运行时禁止xnee的所有输出。我尝试将其更改为

DUMMY=$( cnee -replay -f $filename.xns -sk q -ns )

基于我在这里找到的建议：How to suppress all output from a command using Bash?

问题是，我仍然看到此输出：

Workaround: Creating context on data display instead of control 
            You can ignore this message
Workaround: Creating context on data display instead of control 
            You can ignore this message
NOTIFICATION: If you have problem with Xnee and recording device events: File a bug report including this text.
NOTIFICATION: If you have problem with Xnee and recording device events: File a bug report including this text.
Workaround: Creating context on data display instead of control 
            You can ignore this message

有什么想法，尽管在$（）中对变量执行了命令，仍然可以将命令输出到shell？

bash版本：GNU bash，版本4.3.48（1）-发行版（x86_64-pc-linux-gnu）

Answer 1

一种常见的处理方法是

$ your_command &> /dev/null

会将stdin和stderr都发送到黑洞。您也可以有选择地过滤stdin或stderr。

抑制来自xnee的输出

1 个答案: