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Whenever I run git ls-tree, the first number in every line is 100644. What does this number mean, and is it really always that number every time?
The only guess I have is that it’s a number for some future compatibility reasons.
–EDIT–
I misread the manual. It turns out that the first number is the mode. So I guess my question is what does mode mean? (file permissions?)
Those are Unix filesystem permissions in octal notation. The first three digits denote the file type (
100means directory), and the following three digits represent permissions for the owner, the owning group, and everybody else (respectively).The following basic permissions can be combined:
--x): execute-w-): writer--): readIn other words 644 means “read and write for the owner, read-only for the rest”.