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We have a proprietary SBC (Single Board Computer) type of platform that is a large sized scale Raspberry Pi essentially. It is ARM based and uses Linux Kernel v3.# as its base. This isn't an Ubuntu question but I know Ubuntu does have ARM support in some versions so maybe there is shared knowledge.

We use a provided BSP (Board Support Package) to get interfacing to it through UART and can give it very basic Linux commands with the $sh.

It's frustrating as I cannot use most of the known bash commands I am used to. Is there anyway to increase functionality by 'adding' bash to different Linux platforms?

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  • I'm curious what "known bash commands" you might be referring to? (Most of the commands that you run through a bash command line prompt aren't "bash commands" at all, but external utilities. There is a fairly short list of commands that are built in.)
    – Wildcard
    Commented Mar 31, 2016 at 23:32
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    Such systems are often limited in resources. Sounds like you are running a variation of BusyBox. If not, busybox can be configured to be very bash like.
    – user156990
    Commented Mar 31, 2016 at 23:36
  • @Wildcard Oh cool. I don't have a definitive list but most general ones like the binary executables found in the path directory like fdisk or chmod etc.
    – bobo06
    Commented Apr 1, 2016 at 4:51
  • @jdv It isn't running busybox but that is a possibility for the platform we are using.
    – bobo06
    Commented Apr 1, 2016 at 4:52
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    Is it because these utilities are not installed, or that your shell cannot find them, or that they do not execute correctly for some reason?
    – Jeff Schaller ♦
    Commented Jan 23, 2019 at 17:32

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Consider dash (Debian Almquist Shell) as a light-weight alternative: https://wiki.archlinux.org/index.php/Dash

(but this will require you to review/edit your existing bash scripts for bash-isms)

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