Why aren’t new terminals that use another language? It seems so antiquated getting errors for not writing the functions in the correct order among other things.
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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The other answers are great. But consider the following, as well.
All the mainstream package managers rely on POSIX-ish shell interpreters. Arch Linux PKGBUILD files require bash syntax, specifically.
RPM and .deb package formats literally embed shell scripts to perform pre- and post-installation tasks. They treat these scripts like hooks.
For instance, a common task would be to create requires users and directories for a program. Quite literally something like
mkdir -p /var/lib/myprogram
.