Subject: Re: should we replace the shell?
To: Jason Downs <downsj@CSOS.ORST.EDU>
From: J.T. Conklin <email@example.com>
Date: 12/07/1994 15:28:53
>>>>> "Jason" == Jason Downs <downsj@CSOS.ORST.EDU> writes:
Jason> one of things i would point out, though, is that ``old timer''
Jason> ksh users tend to *really* dislike pdksh, because it misses
Jason> several features from ksh. (such as [[ ]] style constructs, at
Jason> least in the version i tried.) so, something you might
Jason> consider is taking pdksh and filling in the missing pieces.
I don't know all the ksh features you missed, but I know that [[ ]]
was added to pdksh 5.1.
The NOTES files included in the release contains the following list of
features that are not yet implemented:
- exported aliases.
- exported functions.
- set -t.
- signals/traps not cleared during functions.
- trap DEBUG, local ERR and EXIT traps in functions.
- ERRNO, LINENO, LINES parameters.
- cd/pwd doesn't have -L or -P options (not all at&t ksh's have this).
- extended file globbing/pattern matching (ei, [?*+@!](pattern list)).
Also, doesn't have posix file globbing (eg, [[:alpha:]], etc.)
- use of an `agent' to execute unreadable/setuid/setgid shell scripts
Are any of them particularly important?