linux常用权限

read­able? writable? exe­cutable?
7 1 1 1
6 1 1 0
5 1 0 1
4 1 0 0
3 0 1 1
2 0 1 0
1 0 0 1
0 0 0 0

4=readable 2=writable 1=executable
1=yes 0=no

Often used:

750,755

能不能不可读但可写?

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