Command line arguments, redirection, etc.
cbk
cbk at se-sd.UUCP
Thu Feb 20 09:08:50 AEST 1986
[ Inscribed on the line, in very tiny letters, were the words: EAT ME ]
Hopefully, this "discussion" about argument passing, redirection, and
such can be put to rest once and for all. Here's my two cents worth,
having just completed porting the PCC C compiler to a proprietary,
decidedly non-UNIX (tm) operating system.
1. Redirection of standard I/O is a part of C, piping is not.
Ref: K&R, chapter 7
"Finally, the routines are meant to be 'portable', in the sense that
they will exist *in compatible form* on any system where C exists"...
The routines mentioned are those which use "standard I/O". See page
144... "output can be redirected to a file by using >...", and "On
the UNIX system, a pipe can also be used..." This implies that
redirection is required functionality, whereas piping is a part of
a particular operating system.
2. Command-line arguments are a part of C.
Ref: K&R, chapter 5.11
"In environments that support C, there is a way to pass command-line
arguments or parameters to a program when it begins executing."
It sounds to me like this whole issue boils down to whether or not someone
has taken the time to *correctly* implement C to provide the functionality
as specified in K&R (or whatever else happens to be your favorite standard).
[ Personal opinion, FLAME ON ]
Any implementation of C that doesn't provide redirection and command-line
argument passing is half-assed at best.
[ FLAME OFF]
You know, I feel better already! Hey kiddies, get out YOUR copy of K&R and
read, read, read!
-- Carl Kuck (apply all standard disclaimers to the preceeding babble)
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