[collinfunk]

MacOS's utilities are really just FreeBSD's with some patches.

https://github.com/apple-oss-distributions/text_cmds https://github.com/apple-oss-distributions/system_cmds https://github.com/apple-oss-distributions/file_cmds https://github.com/apple-oss-distributions/adv_cmds https://github.com/apple-oss-distributions/shell_cmds https://github.com/apple-oss-distributions/misc_cmds

[vermaden]

That is because Apple took entire FreeBSD 'userspace' as part of Mac OS X.