Dev
/dev is a core Unix device directory on macOS that provides special files used by the operating system and hardware-aware software.
What is Dev?
/dev is a standard Unix-style system directory that contains device nodes and special files representing hardware, pseudo-devices, terminals, disks, and other low-level interfaces. macOS and many command-line tools, drivers, installers, recovery workflows, and developer utilities interact with entries in /dev for tasks such as disk access, terminal communication, and system operations.
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Safety overview
Status: Use with caution
/dev is part of normal macOS system operation. Its contents are not ordinary user files, and removing or altering items here can interfere with booting, storage access, terminal sessions, or other core functions. Data loss or system instability is possible if device nodes are modified incorrectly.
Recommendation: Keep /dev unchanged. Review it only for diagnostic or administrative purposes if you know exactly what you are doing. Do not manually delete entries from this directory as part of routine cleanup.
File path
/dev
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