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From: schaefer@ogicse.ogi.edu (Barton E. Schaefer)
Newsgroups: comp.bugs.4bsd
Subject: Re: "Invalid null command"
Message-ID: <19642@ogicse.ogi.edu>
Date: 5 Apr 91 03:33:44 GMT
Article-I.D.: ogicse.19642
References: <1991Apr2.005620.11434@ico.isc.com> <PPDuZ1w164w@dogface> <127435@uunet.UU.NET>
Distribution: na
Organization: Oregon Graduate Institute (formerly OGC), Beaverton, OR
Lines: 20

In article <127435@uunet.UU.NET> rbj@uunet.UU.NET (Root Boy Jim) writes:
} In article <PPDuZ1w164w@dogface>  writes:
} ?rcd@ico.isc.com (Dick Dunn) writes:
} ?> [users] are occasionally annoyed to find that csh rejects this syntax
} ?> with the confusing message "Invalid null command".
} ?
} ?What about
} ?	cat /dev/null > splot
} 
} OVERKILL! There is a builtin command, `:' which works nicely,

That's not a builtin command, it's a degenerate case of a label for goto!
For instance,

    empty:>splot

if you think that's clearer. :-)
-- 
Bart Schaefer                                           schaefer@zipcode.com
Z-Code Software Corporation                             schaefer@cse.ogi.edu