Synchronization failed for Linux E667

After editing files in the/proc directory using Vim, save the file and display "synchronization failed in E667 ".

Cause analysis:

Because the proc directory is a virtual file system, the data stored in it is in the memory and does not occupy the disk space. Therefore, after editing with Vim, The E667 synchronization fails, the correct modification method is to use echo.

For example, modify the value of/proc/sys/fs/nr_open to 20000000, that is, echo 20000000>/proc/sys/fs/nr_open

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