linux - 抑制来自 bash 脚本的控制台错误

Question

我正在编写一个显示最大文件的 bash 脚本在我的树莓派 linux 盒子上

如何抑制目录读取错误的控制台输出比如失物招领等？

du / -Sh | sort -rh | head -n 15

示例输出:

du: cannot access `/proc/2884/task/2884/fd/4': No such file or directory
du: cannot access `/proc/2884/task/2884/fdinfo/4': No such file or directory
du: cannot access `/proc/2884/fd/4': No such file or directory
du: cannot access `/proc/2884/fdinfo/4': No such file or directory
248M    /mnt/pishare/ftp/ipcam
127M    /usr/lib/arm-linux-gnueabihf
125M    /usr/bin
101M    /var
78M     /usr/lib
71M     /usr/lib/chromium
68M     /usr/lib/jvm/jdk-7-oracle-armhf/jre/lib
60M     /usr/share/icons/gnome
51M     /opt/Wolfram/WolframEngine/10.0/SystemFiles/Converters/Java
42M     /opt/Wolfram/WolframEngine/10.0/SystemFiles/Kernel/Binaries/Linux-ARM
35M     /var/lib/apt/lists
35M     /var/cache/apt
34M     /usr/lib/jvm/jdk-7-oracle-armhf/lib
31M     /usr/lib/gcc/arm-linux-gnueabihf/4.6

Answer 1

您可以使用:

du / -Sh 2>/dev/null | sort -rh | head -n 15

即在 du 命令中将 stderr 重定向到空设备。