What are the file permission bits?
Un article de Sometimes Kitties Think Too.
mode Description
[modifier]
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S_ISUID set-user-id on execution S_ISGID S_ISVTX saved-text (sticky bit)
S_IRWXU read/write/execute by user
S_IRWXG read/write/execute by group
S_IRWXO read/write/execute by other
