The Answer Guy

subshells in ksh, etc.

Answered By Bill Rausch on Thu, 1 Jun 2000

All? of the popular free sh-like shells (pdksh, bash, etc.) have the bug you mentioned in http://linuxgazette.net/issue54/tag/11.html. It is documented somewhere; I've seen a reference a couple of times (pdksh man page I think, maybe other places as well).

I got bit porting some scripts from HP-UX to Linux. Took a while to figure out what was busted. The particular construct I was using was piping a command through a "while read loop".

The original ksh is now available from ATT but with some kind of goofy license. I don't know if it will catch on or not.

Bill

[ They explain it a little bit in their ATT Source License FAQ:

http://www.research.att.com/sw/download/faq.license.html

Essentially, the goofiest thing about it is making sure everyone is clear that further recipients have to actively agree to the license; active agreement is why they don't have a normal FTP site to get these toys from.
-- Heather. ]

Copyright © 2000, James T. Dennis
Published in The Linux Gazette Issue 55 July 2000

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