/.git/index.lock』 File exists

Git – fatal: Unable to create 『/.git/index.lock』: File exists.

fatal: Unable to create 『/path/my_proj/.git/index.lock』: File exists.

If no other git process is currently running, this probably means a git process crashed in this repository earlier. Make sure no other git process is running and remove the file manually to continue.

解決參考：

1、https://stackoverflow.com/questions/9282632/git-index-lock-file-exists-when-i-try-to-commit-but-cannot-delete-the-file

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