Here’s the new tools provided within High Sierra. In each case I’ve provided the summary in the man page for that command, or the description that appears when you type the command followed by ––help. Therefore some command-line tools might be missing from this list. It’s possible a virtual machine installation doesn’t install certain services common to an actual bare-metal installation of macOS. Notably, the Xcode command-line tools were NOT installed, and nor were any third-party command-line managers like brew. To compare the contents of the paths, I used a virtual machine with a fresh Sierra installation, and then updated it to High Sierra. To get this information I simply diff’ed the file listings of /bin, /sbin, /usr/sbin and /usr/bin on Sierra and High Sierra – these being listed in the $PATH for a standard macOS user ( /usr/local/bin/ is also listed, but does not exist within a default install of macOS). If you can provide more info of any of the tools then share the info in the comments below.

But take a look at the list see what you think. There’s also a new yaa archive filetype that I can’t find any information about online.

Perhaps of most interest is the removal of the command-line ftp and telnet programs – although surely this was a long time coming considering how insecure these are. There are not very many new tools, and none seem vital from an everyday-usage perspective. What’s new? What’s gone? Here you can find out. Here’s a list of the differences between the main command-line tool listings in High Sierra compared to its predecessor Sierra.

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