31 Dec
2022
31 Dec
'22
2:31 a.m.
On Dec 30, 2022, at 1:02 PM, Larry McVoy
<lm(a)mcvoy.com> wrote:
Is there are reason to hang on to the Bourne shell? Maybe shell scripts?
Does it perform better than ksh or bash?
POSIX sh seems like a good lowest-common-denominator shell to write for (sorry, SunOS and
xpg4).
Don't get me wrong, I much prefer the sh syntax over csh syntax, but
I'd never go back to the Bourne shell as my login shell. Way too much
useful stuff in ksh/bash.
I mean I would assume the reason is that bash takes a whole lot more memory and CPU to do
its very convenient magic. That's an issue if you're trying to run on a PDP-11
and only have 16 bits of address space, but in 64-bit-world, where you almost certainly
have at least half a gigabyte of core storage available, and your processor clock is
almost certainly in at least the high hundreds of MHz...yeah.
Although (because my daily driver is a Mac) I've finally taken the zsh plunge. I
feel a little dirty, but oh-my-zsh certainly has its attractions.
Adam