Unix

/bin : For binaries usable before the /usr partition is mounted. This is used for trivial binaries used in the very early boot stage or ones that you need to have available in booting single-user mode. Think of binaries like cat, ls, etc.

/sbin : Same, but for binaries with superuser (root) privileges required.

/usr/bin : Same as first, but for general system-wide binaries.

/usr/sbin : Same as above, but for binaries with superuser (root) privileges required.

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