12Hard link or symlink: what actually differs, and when does the choice bite you?▼easyRed HatTCSInfosys1 notes & commentsunlockedA beginner question with a senior follow-up hiding in it. Once you know a hard link is a second name for an inode, log rotation and backup behaviour both stop being mysterious.Open full answer →
20Someone ran chmod -x on the chmod binary. Nothing can change permissions now. How do you recover?▼easyTCSInfosysAccenture○ sign inA one-line mistake that locks you out of the obvious fix. The fast recovery teaches more about the permission model than any man page will.Open full answer →
09Walk me through how an AWS IAM request is evaluated. Where does an explicit deny fit?▼hard★ EssentialAmazonJPMorgan ChaseGoldman Sachs2 notes & commentsunlockedThe question that separates console users from people who have debugged a permissions failure across accounts. Evaluation order is deterministic and knowing it makes AccessDenied readable.Open full answer →
