Another sed question.

[Randal Schwartz]

In article <1989Dec2.134348.22524 at virtech.uucp>, cpcahil at virtech (Conor P. Cahill) writes:
| Because the programmer wanted to do it that way.  Lots of echos would have
| been ugly, but a cat with here documents would have been just as clear and
| probably as efficient.

Just a nit... The "'cat' on a 'here' document method" must run over
the data twice... once to create the file in /tmp that serves as the
stdin, and once when cat reads that *as* stdin.  That's a lot of
overhead if the file is large.  Also, you must ensure that you don't
blow away the endmarker when you are editing the file, or the shell
gets a bit confused.

I like the "#!/bin/sed 1d" hack, but only when I'm trying to impress
someone with another tricky use of #!, *or* I have to have a "program"
put out constant text ("blurfl is no longer available... use the
/etc/foobar/blurfl version instead!").

Just another UNIX hacker,
-- 
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