Importing mksh in base

[Baptiste Daroussin]

On Fri, Jan 25, 2019 at 11:36:40AM -0800, Rodney W. Grimes wrote:
> > Hi everyone,
> > 
> > I would like to import mksh in base, https://www.mirbsd.org/mksh.htm
> > And make it the default root shell (not necessary in one step)
> > 
> > Why:
> > 1/ it is tiny 400k (in the packaged version) all other shells fitting the
> > expectation are bigger
> It is more than twice the size of our current /bin/sh, and giving up
> 200k on the nano/tiny/wifi BSD is hard to justify.  400k is near the
> size of tcsh.
> 
To be fair here:
mksh is 331k on my amd64 machine
/bin/sh is 165k

mksh only depends on libc
/bin/sh depends on libc + libedit which adds an additional 231k to the battle.

If now we are comparing to the actual root shell:
csh is 419k on the same machine and it depends on libncursesw and libcrypt

Best regards,
Bapt
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