Solve "nothing added to commit but untracked files present"“

In execution git commit The error message displays The system cannot open the specified device or file , The document describing the project does not “add”, It has to be executed first git add file name , And then execute git commit -m “xxx”

The error is resolved as follows :
Put each file in sequence git add

Then proceed to the original git commit -m Command line
If you're not careful, add Redundant documents , You can undo
（1） If it is revoking, all have add The file of :
git reset HEAD .
（2） If it is to undo a file or folder ：
git reset HEAD -filename