pdksh vs. mksh info [was: Re: Apparently, csh programming is considered harmful.]

[Tom McLaughlin]

On Sun, 2007-12-16 at 22:26 -0500, Chuck Robey wrote:
> Tom McLaughlin wrote:
> >> Now that you mention pdksh, have you tried mksh (in Ports too)?
> >>
> >> I've installed it and successfully run moderately large ksh scripts
> >> (like the webrev(1) utility of OpenSolaris), and it is about an order of
> >> magnitude smaller than pdksh here:
> >>
> >> % keramida at kobe:/usr/local/bin$ ls -ld mksh bash ksh
> >> % -rwxr-xr-x  1 root  wheel  -  684699 Dec  9 19:51 bash
> >> % -r-xr-xr-x  1 root  wheel  - 2390645 Aug 31 17:07 ksh
> >> % -r-xr-xr-x  1 root  wheel  -  236202 Dec  9 18:34 mksh
> >> % keramida at kobe:/usr/local/bin$ ldd mksh bash ksh
> >> % mksh:
> >> %         libc.so.7 => /lib/libc.so.7 (0x280ae000)
> >> % bash:
> >> %         libncurses.so.7 => /lib/libncurses.so.7 (0x28101000)
> >> %         libintl.so.8 => /usr/local/lib/libintl.so.8 (0x28144000)
> >> %         libiconv.so.3 => /usr/local/lib/libiconv.so.3 (0x28156000)
> >> %         libc.so.7 => /lib/libc.so.7 (0x2824b000)
> >> % ldd: ksh: not a dynamic executable
> >> % keramida at kobe:/usr/local/bin$
> >>
> > 
> > I've maintained a port of OpenBSD's pdksh for some time but I've never
> > committed it.  Think of pdksh but still actively maintained.  
> > 
> > http://people.freebsd.org/~tmclaugh/files/openksh/openksh-4.2.shar
> > 
> > [tom at releng-7-fbsd tom]$ ls -al /usr/local/bin/ksh  
> > -r-xr-xr-x  1 root  wheel  192032 Dec 16 18:22 /usr/local/bin/ksh*
> 
>   If you're familiar with pdksh, are you also familiar with ksh93, which 
> is (I believe) Mr. Korn's own shell?  If you are, I would be interessted 
>   in your opinion of the two, any comparisons you might give.

I've never used ksh93 so I really can't say.  There is a NOTES file
included with pdksh which gives a starter.  I created this port a few
years ago because of some random issue I've long since forgotten with
pdksh on my FreeBSD box which didn't happen on my OpenBSD box.

tom

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