Operating systems

• Debian 9.0.0 (released 2017-06-17) includes a bash with $PS0 capability out of the box.
  • Ubuntu 17.10, released 2017-10-19, inherited PS0 from Debian.
  • Linux Mint 19, released 2018-06-29, has it out of the box.
• It's made it into a default install of Fedora Core 26 (2017-07-11).
  • That should eventually make it into Redhat Enterprise and CentOS.
    • CentOS 7.5 still ships with bash 4.2.* and is not PS0-capable. I assume that RHEL 7.5 is similar.
  • Amazon Linux, despite Amazon the company avoiding GPLv3 internally, has a GPLv3 version of bash. However, their bash tends to be quite old (?) - just not as old as Apple's. I gather Amazon Linux was originally derived from CentOS, but is now essentially a fork.
• macOS is unlikely to ever include it.
  • Apple is too into avoiding GPLv3 for that to happen.
  • You can get it from homebrew though (2016-09-19, perhaps slightly earlier).
  • After you have homebrew installed (as above), you can go here for info about installing and using your new bash.
• FreeBSD
  • FreeBSD is a bit GPL-avoidant - even GPLv2. It does not include bash out of the box.
  • However, you can install a modern bash easily with "pkg install bash". This is true of FreeBSD 11.1, perhaps earlier. It probably has been true for a while (2017-08-24).
• OpenIndiana (Solaris variant)
  • 2018-01-05: 5.11 includes a PS0-capable bash out of the box, and likely has for a while.
• Haiku (Opensource BeOS clone)
  • 2018-01-05: A nightly build included a bash with PS0 out of the box.

Here's an example of building bash and chsh'ing to it, in case your OS does not yet support $PS0, but you don't want to wait.

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