Getting Bash
If you are running a GNU/Linux system, you almost certainly already have access to Bash. It is installed by default on almost every GNU/Linux computer system.
On such systems, it is very often the default login shell for users. This means that when a new user logs in for the first time, it's the first interactive program that runs, and it starts up to wait for command input from the user.
On some systems, such as Debian GNU/Linux, Bash will be the default login shell for non-system users, usually human beings rather than system processes, but a different shell, such as the POSIX shell or Bourne shell, will be used for system accounts.
Bash can be installed on other Unix-like systems as well, such as on FreeBSD, NetBSD, OpenBSD, ...
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