There's a POSIX utility named "cat" and cats already know what it does, but if a man wants to know, he just types the following words into the terminal and then presses <Enter>:
That makes it Shell Friendly Interactive Shell which is redundant. Then there would be Shell Korn Shell, and Shell C shell. The 'sh' for Shell goes at the end as like a grammatical marker. It's postfix. Sh-FI-sh is awkward because it's prefix of the Shell -> 'sh' and also includes the 'sh' for Shell at the end making it a Shell X Shell sort of thing.
# eix sys-apps/dog
* sys-apps/dog
Available versions: 1.7-r6
Homepage: https://packages.gentoo.org/package/sys-apps/dog
Description: Dog is better than cat
NAME
dog - Command line utility for the sheep daemon
SYNOPSIS
dog <command> <subcommand> [options]
DESCRIPTION
dog - Sheepdog is a distributed storage system for QEMU. It provides
highly available block level storage volumes to virtual machines.
Sheepdog supports advanced volume management features such as snapshot,
cloning, and thin provisioning. The architecture of Sheepdog is fully
symmetric; there is no central node such as a meta-data server.
The server daemon is called sheep(8). A command line utility is availā
able via dog(8). QEMU virtual machines use the sheep daemon via a
block driver available in qemu(1).
For more information, run 'dog <command> <subcommand> --help'.