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Environment variables are visible with 'ps -E', to anyone with the same UID or root. In Linux, they're visible in /proc/<pid>/environ, which is permission 400

by tlb 8y ago

Environment variables are visible with 'ps -E', to anyone with the same UID or root. In Linux, they're visible in /proc/<pid>/environ, which is permission 400 and owned by the effective user of the process.